CB Radio or PRS
#221
Guest
Posts: n/a
Re: CB Radio or PRS - Update
Here's one nice writeup on the 18' cable myth you may enjoy reading Mike...
http://www.stu-offroad.com/misc/myth-1.htm
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407BF51F.15C541BE@sympatico.ca...
> Ya????
>
> Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> oh man I could sure tell when someone had been messing with a cable.
>
> We were transmitting data over the system and with a messed up coax the
> retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> to have good clean reception. If someone chopped 2' off in a door, I
> would need to fix it by cutting 4' more off.
>
> Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> does data.
>
> And I guess having a 3' coax cable wouldn't mess up the SWR at all
> either eh?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Jerry Bransford wrote:
> >
> > Exactly... the 18' coax length recommendation for CB radios is an
old-wive's
> > tale... a complete myth.
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > the coax length thing :) That's a very common misconception but it
> > > just ain't so, unless you're running a really non-standard antenna
> > > the coax length doesn't make any major difference.
> > >
> > > In theory, shorter is better but for the difference in length thats
> > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > notice any difference.
> > >
> > > The only concern I'd have with shortening the coax run would be
> > > getting the connector properly installed, may take a try or two for a
> > > first timer but not out of the question.
> > >
> > > -Howard.
> > >
> > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > wrote:
> > >
> > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > >shorter.
> > > >
> > > >Mike
> > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >88 Cherokee 235 BFG AT's
> > > >
> > > >TW wrote:
> > > >>
> > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > weekend
> > > >> will be spent installing it.
> > > >>
> > > >> I was thinking how would it look if I could somehow install the CB
> > antenna
> > > >> on the exact opposite side of the radio antenna (same height and
spot).
> > My
> > > >> radio antenna is on the right side of the TJ, CB antenna on the
left
> > side
> > > >> would ensure coax is shortest and the antenna would be somewhat in
the
> > > >> middle of the truck (though to one side). Any ideas or photos of
such
> > an
> > > >> install?
> > > >>
> > > >> Thanks for all the help guys. Its much appreciated.
> > >
http://www.stu-offroad.com/misc/myth-1.htm
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407BF51F.15C541BE@sympatico.ca...
> Ya????
>
> Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> oh man I could sure tell when someone had been messing with a cable.
>
> We were transmitting data over the system and with a messed up coax the
> retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> to have good clean reception. If someone chopped 2' off in a door, I
> would need to fix it by cutting 4' more off.
>
> Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> does data.
>
> And I guess having a 3' coax cable wouldn't mess up the SWR at all
> either eh?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Jerry Bransford wrote:
> >
> > Exactly... the 18' coax length recommendation for CB radios is an
old-wive's
> > tale... a complete myth.
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > the coax length thing :) That's a very common misconception but it
> > > just ain't so, unless you're running a really non-standard antenna
> > > the coax length doesn't make any major difference.
> > >
> > > In theory, shorter is better but for the difference in length thats
> > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > notice any difference.
> > >
> > > The only concern I'd have with shortening the coax run would be
> > > getting the connector properly installed, may take a try or two for a
> > > first timer but not out of the question.
> > >
> > > -Howard.
> > >
> > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > wrote:
> > >
> > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > >shorter.
> > > >
> > > >Mike
> > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >88 Cherokee 235 BFG AT's
> > > >
> > > >TW wrote:
> > > >>
> > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > weekend
> > > >> will be spent installing it.
> > > >>
> > > >> I was thinking how would it look if I could somehow install the CB
> > antenna
> > > >> on the exact opposite side of the radio antenna (same height and
spot).
> > My
> > > >> radio antenna is on the right side of the TJ, CB antenna on the
left
> > side
> > > >> would ensure coax is shortest and the antenna would be somewhat in
the
> > > >> middle of the truck (though to one side). Any ideas or photos of
such
> > an
> > > >> install?
> > > >>
> > > >> Thanks for all the help guys. Its much appreciated.
> > >
#222
Guest
Posts: n/a
Re: CB Radio or PRS - Update
That is one person's opinion Jerry and I don't know that person from a
hole in the ground.
Though I did notice the reception seemed better at 12' than 18' and that
having a cable 'not' in one of those multiples really messes up data
packets. Transmitter makers like Ericsson also call for the 12' or 18'
lines and warn not to coil them which can 'short' the RF out.
I haven't played with enough voice systems to try and set the SWR with
unmatched cables. Have you?
Mike
Jerry Bransford wrote:
>
> Here's one nice writeup on the 18' cable myth you may enjoy reading Mike...
> http://www.stu-offroad.com/misc/myth-1.htm
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:407BF51F.15C541BE@sympatico.ca...
> > Ya????
> >
> > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > oh man I could sure tell when someone had been messing with a cable.
> >
> > We were transmitting data over the system and with a messed up coax the
> > retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> > to have good clean reception. If someone chopped 2' off in a door, I
> > would need to fix it by cutting 4' more off.
> >
> > Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> > does data.
> >
> > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > either eh?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jerry Bransford wrote:
> > >
> > > Exactly... the 18' coax length recommendation for CB radios is an
> old-wive's
> > > tale... a complete myth.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > N6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > > the coax length thing :) That's a very common misconception but it
> > > > just ain't so, unless you're running a really non-standard antenna
> > > > the coax length doesn't make any major difference.
> > > >
> > > > In theory, shorter is better but for the difference in length thats
> > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > notice any difference.
> > > >
> > > > The only concern I'd have with shortening the coax run would be
> > > > getting the connector properly installed, may take a try or two for a
> > > > first timer but not out of the question.
> > > >
> > > > -Howard.
> > > >
> > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > > wrote:
> > > >
> > > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > > >shorter.
> > > > >
> > > > >Mike
> > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > >88 Cherokee 235 BFG AT's
> > > > >
> > > > >TW wrote:
> > > > >>
> > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > > weekend
> > > > >> will be spent installing it.
> > > > >>
> > > > >> I was thinking how would it look if I could somehow install the CB
> > > antenna
> > > > >> on the exact opposite side of the radio antenna (same height and
> spot).
> > > My
> > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> left
> > > side
> > > > >> would ensure coax is shortest and the antenna would be somewhat in
> the
> > > > >> middle of the truck (though to one side). Any ideas or photos of
> such
> > > an
> > > > >> install?
> > > > >>
> > > > >> Thanks for all the help guys. Its much appreciated.
> > > >
hole in the ground.
Though I did notice the reception seemed better at 12' than 18' and that
having a cable 'not' in one of those multiples really messes up data
packets. Transmitter makers like Ericsson also call for the 12' or 18'
lines and warn not to coil them which can 'short' the RF out.
I haven't played with enough voice systems to try and set the SWR with
unmatched cables. Have you?
Mike
Jerry Bransford wrote:
>
> Here's one nice writeup on the 18' cable myth you may enjoy reading Mike...
> http://www.stu-offroad.com/misc/myth-1.htm
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:407BF51F.15C541BE@sympatico.ca...
> > Ya????
> >
> > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > oh man I could sure tell when someone had been messing with a cable.
> >
> > We were transmitting data over the system and with a messed up coax the
> > retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> > to have good clean reception. If someone chopped 2' off in a door, I
> > would need to fix it by cutting 4' more off.
> >
> > Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> > does data.
> >
> > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > either eh?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jerry Bransford wrote:
> > >
> > > Exactly... the 18' coax length recommendation for CB radios is an
> old-wive's
> > > tale... a complete myth.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > N6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > > the coax length thing :) That's a very common misconception but it
> > > > just ain't so, unless you're running a really non-standard antenna
> > > > the coax length doesn't make any major difference.
> > > >
> > > > In theory, shorter is better but for the difference in length thats
> > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > notice any difference.
> > > >
> > > > The only concern I'd have with shortening the coax run would be
> > > > getting the connector properly installed, may take a try or two for a
> > > > first timer but not out of the question.
> > > >
> > > > -Howard.
> > > >
> > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > > wrote:
> > > >
> > > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > > >shorter.
> > > > >
> > > > >Mike
> > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > >88 Cherokee 235 BFG AT's
> > > > >
> > > > >TW wrote:
> > > > >>
> > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > > weekend
> > > > >> will be spent installing it.
> > > > >>
> > > > >> I was thinking how would it look if I could somehow install the CB
> > > antenna
> > > > >> on the exact opposite side of the radio antenna (same height and
> spot).
> > > My
> > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> left
> > > side
> > > > >> would ensure coax is shortest and the antenna would be somewhat in
> the
> > > > >> middle of the truck (though to one side). Any ideas or photos of
> such
> > > an
> > > > >> install?
> > > > >>
> > > > >> Thanks for all the help guys. Its much appreciated.
> > > >
#223
Guest
Posts: n/a
Re: CB Radio or PRS - Update
That is one person's opinion Jerry and I don't know that person from a
hole in the ground.
Though I did notice the reception seemed better at 12' than 18' and that
having a cable 'not' in one of those multiples really messes up data
packets. Transmitter makers like Ericsson also call for the 12' or 18'
lines and warn not to coil them which can 'short' the RF out.
I haven't played with enough voice systems to try and set the SWR with
unmatched cables. Have you?
Mike
Jerry Bransford wrote:
>
> Here's one nice writeup on the 18' cable myth you may enjoy reading Mike...
> http://www.stu-offroad.com/misc/myth-1.htm
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:407BF51F.15C541BE@sympatico.ca...
> > Ya????
> >
> > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > oh man I could sure tell when someone had been messing with a cable.
> >
> > We were transmitting data over the system and with a messed up coax the
> > retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> > to have good clean reception. If someone chopped 2' off in a door, I
> > would need to fix it by cutting 4' more off.
> >
> > Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> > does data.
> >
> > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > either eh?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jerry Bransford wrote:
> > >
> > > Exactly... the 18' coax length recommendation for CB radios is an
> old-wive's
> > > tale... a complete myth.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > N6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > > the coax length thing :) That's a very common misconception but it
> > > > just ain't so, unless you're running a really non-standard antenna
> > > > the coax length doesn't make any major difference.
> > > >
> > > > In theory, shorter is better but for the difference in length thats
> > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > notice any difference.
> > > >
> > > > The only concern I'd have with shortening the coax run would be
> > > > getting the connector properly installed, may take a try or two for a
> > > > first timer but not out of the question.
> > > >
> > > > -Howard.
> > > >
> > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > > wrote:
> > > >
> > > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > > >shorter.
> > > > >
> > > > >Mike
> > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > >88 Cherokee 235 BFG AT's
> > > > >
> > > > >TW wrote:
> > > > >>
> > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > > weekend
> > > > >> will be spent installing it.
> > > > >>
> > > > >> I was thinking how would it look if I could somehow install the CB
> > > antenna
> > > > >> on the exact opposite side of the radio antenna (same height and
> spot).
> > > My
> > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> left
> > > side
> > > > >> would ensure coax is shortest and the antenna would be somewhat in
> the
> > > > >> middle of the truck (though to one side). Any ideas or photos of
> such
> > > an
> > > > >> install?
> > > > >>
> > > > >> Thanks for all the help guys. Its much appreciated.
> > > >
hole in the ground.
Though I did notice the reception seemed better at 12' than 18' and that
having a cable 'not' in one of those multiples really messes up data
packets. Transmitter makers like Ericsson also call for the 12' or 18'
lines and warn not to coil them which can 'short' the RF out.
I haven't played with enough voice systems to try and set the SWR with
unmatched cables. Have you?
Mike
Jerry Bransford wrote:
>
> Here's one nice writeup on the 18' cable myth you may enjoy reading Mike...
> http://www.stu-offroad.com/misc/myth-1.htm
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:407BF51F.15C541BE@sympatico.ca...
> > Ya????
> >
> > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > oh man I could sure tell when someone had been messing with a cable.
> >
> > We were transmitting data over the system and with a messed up coax the
> > retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> > to have good clean reception. If someone chopped 2' off in a door, I
> > would need to fix it by cutting 4' more off.
> >
> > Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> > does data.
> >
> > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > either eh?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jerry Bransford wrote:
> > >
> > > Exactly... the 18' coax length recommendation for CB radios is an
> old-wive's
> > > tale... a complete myth.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > N6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > > the coax length thing :) That's a very common misconception but it
> > > > just ain't so, unless you're running a really non-standard antenna
> > > > the coax length doesn't make any major difference.
> > > >
> > > > In theory, shorter is better but for the difference in length thats
> > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > notice any difference.
> > > >
> > > > The only concern I'd have with shortening the coax run would be
> > > > getting the connector properly installed, may take a try or two for a
> > > > first timer but not out of the question.
> > > >
> > > > -Howard.
> > > >
> > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > > wrote:
> > > >
> > > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > > >shorter.
> > > > >
> > > > >Mike
> > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > >88 Cherokee 235 BFG AT's
> > > > >
> > > > >TW wrote:
> > > > >>
> > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > > weekend
> > > > >> will be spent installing it.
> > > > >>
> > > > >> I was thinking how would it look if I could somehow install the CB
> > > antenna
> > > > >> on the exact opposite side of the radio antenna (same height and
> spot).
> > > My
> > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> left
> > > side
> > > > >> would ensure coax is shortest and the antenna would be somewhat in
> the
> > > > >> middle of the truck (though to one side). Any ideas or photos of
> such
> > > an
> > > > >> install?
> > > > >>
> > > > >> Thanks for all the help guys. Its much appreciated.
> > > >
#224
Guest
Posts: n/a
Re: CB Radio or PRS - Update
That is one person's opinion Jerry and I don't know that person from a
hole in the ground.
Though I did notice the reception seemed better at 12' than 18' and that
having a cable 'not' in one of those multiples really messes up data
packets. Transmitter makers like Ericsson also call for the 12' or 18'
lines and warn not to coil them which can 'short' the RF out.
I haven't played with enough voice systems to try and set the SWR with
unmatched cables. Have you?
Mike
Jerry Bransford wrote:
>
> Here's one nice writeup on the 18' cable myth you may enjoy reading Mike...
> http://www.stu-offroad.com/misc/myth-1.htm
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:407BF51F.15C541BE@sympatico.ca...
> > Ya????
> >
> > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > oh man I could sure tell when someone had been messing with a cable.
> >
> > We were transmitting data over the system and with a messed up coax the
> > retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> > to have good clean reception. If someone chopped 2' off in a door, I
> > would need to fix it by cutting 4' more off.
> >
> > Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> > does data.
> >
> > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > either eh?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jerry Bransford wrote:
> > >
> > > Exactly... the 18' coax length recommendation for CB radios is an
> old-wive's
> > > tale... a complete myth.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > N6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > > the coax length thing :) That's a very common misconception but it
> > > > just ain't so, unless you're running a really non-standard antenna
> > > > the coax length doesn't make any major difference.
> > > >
> > > > In theory, shorter is better but for the difference in length thats
> > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > notice any difference.
> > > >
> > > > The only concern I'd have with shortening the coax run would be
> > > > getting the connector properly installed, may take a try or two for a
> > > > first timer but not out of the question.
> > > >
> > > > -Howard.
> > > >
> > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > > wrote:
> > > >
> > > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > > >shorter.
> > > > >
> > > > >Mike
> > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > >88 Cherokee 235 BFG AT's
> > > > >
> > > > >TW wrote:
> > > > >>
> > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > > weekend
> > > > >> will be spent installing it.
> > > > >>
> > > > >> I was thinking how would it look if I could somehow install the CB
> > > antenna
> > > > >> on the exact opposite side of the radio antenna (same height and
> spot).
> > > My
> > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> left
> > > side
> > > > >> would ensure coax is shortest and the antenna would be somewhat in
> the
> > > > >> middle of the truck (though to one side). Any ideas or photos of
> such
> > > an
> > > > >> install?
> > > > >>
> > > > >> Thanks for all the help guys. Its much appreciated.
> > > >
hole in the ground.
Though I did notice the reception seemed better at 12' than 18' and that
having a cable 'not' in one of those multiples really messes up data
packets. Transmitter makers like Ericsson also call for the 12' or 18'
lines and warn not to coil them which can 'short' the RF out.
I haven't played with enough voice systems to try and set the SWR with
unmatched cables. Have you?
Mike
Jerry Bransford wrote:
>
> Here's one nice writeup on the 18' cable myth you may enjoy reading Mike...
> http://www.stu-offroad.com/misc/myth-1.htm
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:407BF51F.15C541BE@sympatico.ca...
> > Ya????
> >
> > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > oh man I could sure tell when someone had been messing with a cable.
> >
> > We were transmitting data over the system and with a messed up coax the
> > retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> > to have good clean reception. If someone chopped 2' off in a door, I
> > would need to fix it by cutting 4' more off.
> >
> > Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> > does data.
> >
> > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > either eh?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jerry Bransford wrote:
> > >
> > > Exactly... the 18' coax length recommendation for CB radios is an
> old-wive's
> > > tale... a complete myth.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > N6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > > the coax length thing :) That's a very common misconception but it
> > > > just ain't so, unless you're running a really non-standard antenna
> > > > the coax length doesn't make any major difference.
> > > >
> > > > In theory, shorter is better but for the difference in length thats
> > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > notice any difference.
> > > >
> > > > The only concern I'd have with shortening the coax run would be
> > > > getting the connector properly installed, may take a try or two for a
> > > > first timer but not out of the question.
> > > >
> > > > -Howard.
> > > >
> > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > > wrote:
> > > >
> > > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > > >shorter.
> > > > >
> > > > >Mike
> > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > >88 Cherokee 235 BFG AT's
> > > > >
> > > > >TW wrote:
> > > > >>
> > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > > weekend
> > > > >> will be spent installing it.
> > > > >>
> > > > >> I was thinking how would it look if I could somehow install the CB
> > > antenna
> > > > >> on the exact opposite side of the radio antenna (same height and
> spot).
> > > My
> > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> left
> > > side
> > > > >> would ensure coax is shortest and the antenna would be somewhat in
> the
> > > > >> middle of the truck (though to one side). Any ideas or photos of
> such
> > > an
> > > > >> install?
> > > > >>
> > > > >> Thanks for all the help guys. Its much appreciated.
> > > >
#225
Guest
Posts: n/a
Re: CB Radio or PRS - Update
That is one person's opinion Jerry and I don't know that person from a
hole in the ground.
Though I did notice the reception seemed better at 12' than 18' and that
having a cable 'not' in one of those multiples really messes up data
packets. Transmitter makers like Ericsson also call for the 12' or 18'
lines and warn not to coil them which can 'short' the RF out.
I haven't played with enough voice systems to try and set the SWR with
unmatched cables. Have you?
Mike
Jerry Bransford wrote:
>
> Here's one nice writeup on the 18' cable myth you may enjoy reading Mike...
> http://www.stu-offroad.com/misc/myth-1.htm
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:407BF51F.15C541BE@sympatico.ca...
> > Ya????
> >
> > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > oh man I could sure tell when someone had been messing with a cable.
> >
> > We were transmitting data over the system and with a messed up coax the
> > retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> > to have good clean reception. If someone chopped 2' off in a door, I
> > would need to fix it by cutting 4' more off.
> >
> > Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> > does data.
> >
> > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > either eh?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jerry Bransford wrote:
> > >
> > > Exactly... the 18' coax length recommendation for CB radios is an
> old-wive's
> > > tale... a complete myth.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > N6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > > the coax length thing :) That's a very common misconception but it
> > > > just ain't so, unless you're running a really non-standard antenna
> > > > the coax length doesn't make any major difference.
> > > >
> > > > In theory, shorter is better but for the difference in length thats
> > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > notice any difference.
> > > >
> > > > The only concern I'd have with shortening the coax run would be
> > > > getting the connector properly installed, may take a try or two for a
> > > > first timer but not out of the question.
> > > >
> > > > -Howard.
> > > >
> > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > > wrote:
> > > >
> > > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > > >shorter.
> > > > >
> > > > >Mike
> > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > >88 Cherokee 235 BFG AT's
> > > > >
> > > > >TW wrote:
> > > > >>
> > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > > weekend
> > > > >> will be spent installing it.
> > > > >>
> > > > >> I was thinking how would it look if I could somehow install the CB
> > > antenna
> > > > >> on the exact opposite side of the radio antenna (same height and
> spot).
> > > My
> > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> left
> > > side
> > > > >> would ensure coax is shortest and the antenna would be somewhat in
> the
> > > > >> middle of the truck (though to one side). Any ideas or photos of
> such
> > > an
> > > > >> install?
> > > > >>
> > > > >> Thanks for all the help guys. Its much appreciated.
> > > >
hole in the ground.
Though I did notice the reception seemed better at 12' than 18' and that
having a cable 'not' in one of those multiples really messes up data
packets. Transmitter makers like Ericsson also call for the 12' or 18'
lines and warn not to coil them which can 'short' the RF out.
I haven't played with enough voice systems to try and set the SWR with
unmatched cables. Have you?
Mike
Jerry Bransford wrote:
>
> Here's one nice writeup on the 18' cable myth you may enjoy reading Mike...
> http://www.stu-offroad.com/misc/myth-1.htm
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> N6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:407BF51F.15C541BE@sympatico.ca...
> > Ya????
> >
> > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > oh man I could sure tell when someone had been messing with a cable.
> >
> > We were transmitting data over the system and with a messed up coax the
> > retries went up exponentially. We needed an 18' or a 12' or a 6' cable
> > to have good clean reception. If someone chopped 2' off in a door, I
> > would need to fix it by cutting 4' more off.
> >
> > Now for that 'ear' test, well I guess a crackle won't hurt sound like it
> > does data.
> >
> > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > either eh?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jerry Bransford wrote:
> > >
> > > Exactly... the 18' coax length recommendation for CB radios is an
> old-wive's
> > > tale... a complete myth.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > N6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in message
> > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > Mike, I don't mean to be an *** but I've gotta disagree with you on
> > > > the coax length thing :) That's a very common misconception but it
> > > > just ain't so, unless you're running a really non-standard antenna
> > > > the coax length doesn't make any major difference.
> > > >
> > > > In theory, shorter is better but for the difference in length thats
> > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > notice any difference.
> > > >
> > > > The only concern I'd have with shortening the coax run would be
> > > > getting the connector properly installed, may take a try or two for a
> > > > first timer but not out of the question.
> > > >
> > > > -Howard.
> > > >
> > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain <romainm@sympatico.ca>
> > > > wrote:
> > > >
> > > > >Unless you 'really' know what you are doing, you cannot make the coax
> > > > >shorter.
> > > > >
> > > > >Mike
> > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > >88 Cherokee 235 BFG AT's
> > > > >
> > > > >TW wrote:
> > > > >>
> > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the
> > > weekend
> > > > >> will be spent installing it.
> > > > >>
> > > > >> I was thinking how would it look if I could somehow install the CB
> > > antenna
> > > > >> on the exact opposite side of the radio antenna (same height and
> spot).
> > > My
> > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> left
> > > side
> > > > >> would ensure coax is shortest and the antenna would be somewhat in
> the
> > > > >> middle of the truck (though to one side). Any ideas or photos of
> such
> > > an
> > > > >> install?
> > > > >>
> > > > >> Thanks for all the help guys. Its much appreciated.
> > > >
#226
Guest
Posts: n/a
Re: CB Radio or PRS - Update
Just read it carefully Mike and perhaps you'll see the electronic theory
behind what he writes. I have an electrical engineering background and what
he says is right on the money. I personally know him very well too and he
has a solid background in this "stuff". Plus we are both heavily into ham
radio and this 18' myth was shot down in ham radio antenna circles many
years ago.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407C0A59.25F5A661@sympatico.ca...
> That is one person's opinion Jerry and I don't know that person from a
> hole in the ground.
>
> Though I did notice the reception seemed better at 12' than 18' and that
> having a cable 'not' in one of those multiples really messes up data
> packets. Transmitter makers like Ericsson also call for the 12' or 18'
> lines and warn not to coil them which can 'short' the RF out.
>
> I haven't played with enough voice systems to try and set the SWR with
> unmatched cables. Have you?
>
> Mike
>
> Jerry Bransford wrote:
> >
> > Here's one nice writeup on the 18' cable myth you may enjoy reading
Mike...
> > http://www.stu-offroad.com/misc/myth-1.htm
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:407BF51F.15C541BE@sympatico.ca...
> > > Ya????
> > >
> > > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > > oh man I could sure tell when someone had been messing with a cable.
> > >
> > > We were transmitting data over the system and with a messed up coax
the
> > > retries went up exponentially. We needed an 18' or a 12' or a 6'
cable
> > > to have good clean reception. If someone chopped 2' off in a door, I
> > > would need to fix it by cutting 4' more off.
> > >
> > > Now for that 'ear' test, well I guess a crackle won't hurt sound like
it
> > > does data.
> > >
> > > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > > either eh?
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Jerry Bransford wrote:
> > > >
> > > > Exactly... the 18' coax length recommendation for CB radios is an
> > old-wive's
> > > > tale... a complete myth.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > To email, remove 'me' from my email address
> > > > N6TAY, PP-ASEL
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > >
> > > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in
message
> > > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > > Mike, I don't mean to be an *** but I've gotta disagree with you
on
> > > > > the coax length thing :) That's a very common misconception but
it
> > > > > just ain't so, unless you're running a really non-standard
antenna
> > > > > the coax length doesn't make any major difference.
> > > > >
> > > > > In theory, shorter is better but for the difference in length
thats
> > > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > > notice any difference.
> > > > >
> > > > > The only concern I'd have with shortening the coax run would be
> > > > > getting the connector properly installed, may take a try or two
for a
> > > > > first timer but not out of the question.
> > > > >
> > > > > -Howard.
> > > > >
> > > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain
<romainm@sympatico.ca>
> > > > > wrote:
> > > > >
> > > > > >Unless you 'really' know what you are doing, you cannot make the
coax
> > > > > >shorter.
> > > > > >
> > > > > >Mike
> > > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > >88 Cherokee 235 BFG AT's
> > > > > >
> > > > > >TW wrote:
> > > > > >>
> > > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now
the
> > > > weekend
> > > > > >> will be spent installing it.
> > > > > >>
> > > > > >> I was thinking how would it look if I could somehow install the
CB
> > > > antenna
> > > > > >> on the exact opposite side of the radio antenna (same height
and
> > spot).
> > > > My
> > > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> > left
> > > > side
> > > > > >> would ensure coax is shortest and the antenna would be somewhat
in
> > the
> > > > > >> middle of the truck (though to one side). Any ideas or photos
of
> > such
> > > > an
> > > > > >> install?
> > > > > >>
> > > > > >> Thanks for all the help guys. Its much appreciated.
> > > > >
behind what he writes. I have an electrical engineering background and what
he says is right on the money. I personally know him very well too and he
has a solid background in this "stuff". Plus we are both heavily into ham
radio and this 18' myth was shot down in ham radio antenna circles many
years ago.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407C0A59.25F5A661@sympatico.ca...
> That is one person's opinion Jerry and I don't know that person from a
> hole in the ground.
>
> Though I did notice the reception seemed better at 12' than 18' and that
> having a cable 'not' in one of those multiples really messes up data
> packets. Transmitter makers like Ericsson also call for the 12' or 18'
> lines and warn not to coil them which can 'short' the RF out.
>
> I haven't played with enough voice systems to try and set the SWR with
> unmatched cables. Have you?
>
> Mike
>
> Jerry Bransford wrote:
> >
> > Here's one nice writeup on the 18' cable myth you may enjoy reading
Mike...
> > http://www.stu-offroad.com/misc/myth-1.htm
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:407BF51F.15C541BE@sympatico.ca...
> > > Ya????
> > >
> > > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > > oh man I could sure tell when someone had been messing with a cable.
> > >
> > > We were transmitting data over the system and with a messed up coax
the
> > > retries went up exponentially. We needed an 18' or a 12' or a 6'
cable
> > > to have good clean reception. If someone chopped 2' off in a door, I
> > > would need to fix it by cutting 4' more off.
> > >
> > > Now for that 'ear' test, well I guess a crackle won't hurt sound like
it
> > > does data.
> > >
> > > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > > either eh?
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Jerry Bransford wrote:
> > > >
> > > > Exactly... the 18' coax length recommendation for CB radios is an
> > old-wive's
> > > > tale... a complete myth.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > To email, remove 'me' from my email address
> > > > N6TAY, PP-ASEL
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > >
> > > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in
message
> > > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > > Mike, I don't mean to be an *** but I've gotta disagree with you
on
> > > > > the coax length thing :) That's a very common misconception but
it
> > > > > just ain't so, unless you're running a really non-standard
antenna
> > > > > the coax length doesn't make any major difference.
> > > > >
> > > > > In theory, shorter is better but for the difference in length
thats
> > > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > > notice any difference.
> > > > >
> > > > > The only concern I'd have with shortening the coax run would be
> > > > > getting the connector properly installed, may take a try or two
for a
> > > > > first timer but not out of the question.
> > > > >
> > > > > -Howard.
> > > > >
> > > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain
<romainm@sympatico.ca>
> > > > > wrote:
> > > > >
> > > > > >Unless you 'really' know what you are doing, you cannot make the
coax
> > > > > >shorter.
> > > > > >
> > > > > >Mike
> > > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > >88 Cherokee 235 BFG AT's
> > > > > >
> > > > > >TW wrote:
> > > > > >>
> > > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now
the
> > > > weekend
> > > > > >> will be spent installing it.
> > > > > >>
> > > > > >> I was thinking how would it look if I could somehow install the
CB
> > > > antenna
> > > > > >> on the exact opposite side of the radio antenna (same height
and
> > spot).
> > > > My
> > > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> > left
> > > > side
> > > > > >> would ensure coax is shortest and the antenna would be somewhat
in
> > the
> > > > > >> middle of the truck (though to one side). Any ideas or photos
of
> > such
> > > > an
> > > > > >> install?
> > > > > >>
> > > > > >> Thanks for all the help guys. Its much appreciated.
> > > > >
#227
Guest
Posts: n/a
Re: CB Radio or PRS - Update
Just read it carefully Mike and perhaps you'll see the electronic theory
behind what he writes. I have an electrical engineering background and what
he says is right on the money. I personally know him very well too and he
has a solid background in this "stuff". Plus we are both heavily into ham
radio and this 18' myth was shot down in ham radio antenna circles many
years ago.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407C0A59.25F5A661@sympatico.ca...
> That is one person's opinion Jerry and I don't know that person from a
> hole in the ground.
>
> Though I did notice the reception seemed better at 12' than 18' and that
> having a cable 'not' in one of those multiples really messes up data
> packets. Transmitter makers like Ericsson also call for the 12' or 18'
> lines and warn not to coil them which can 'short' the RF out.
>
> I haven't played with enough voice systems to try and set the SWR with
> unmatched cables. Have you?
>
> Mike
>
> Jerry Bransford wrote:
> >
> > Here's one nice writeup on the 18' cable myth you may enjoy reading
Mike...
> > http://www.stu-offroad.com/misc/myth-1.htm
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:407BF51F.15C541BE@sympatico.ca...
> > > Ya????
> > >
> > > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > > oh man I could sure tell when someone had been messing with a cable.
> > >
> > > We were transmitting data over the system and with a messed up coax
the
> > > retries went up exponentially. We needed an 18' or a 12' or a 6'
cable
> > > to have good clean reception. If someone chopped 2' off in a door, I
> > > would need to fix it by cutting 4' more off.
> > >
> > > Now for that 'ear' test, well I guess a crackle won't hurt sound like
it
> > > does data.
> > >
> > > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > > either eh?
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Jerry Bransford wrote:
> > > >
> > > > Exactly... the 18' coax length recommendation for CB radios is an
> > old-wive's
> > > > tale... a complete myth.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > To email, remove 'me' from my email address
> > > > N6TAY, PP-ASEL
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > >
> > > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in
message
> > > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > > Mike, I don't mean to be an *** but I've gotta disagree with you
on
> > > > > the coax length thing :) That's a very common misconception but
it
> > > > > just ain't so, unless you're running a really non-standard
antenna
> > > > > the coax length doesn't make any major difference.
> > > > >
> > > > > In theory, shorter is better but for the difference in length
thats
> > > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > > notice any difference.
> > > > >
> > > > > The only concern I'd have with shortening the coax run would be
> > > > > getting the connector properly installed, may take a try or two
for a
> > > > > first timer but not out of the question.
> > > > >
> > > > > -Howard.
> > > > >
> > > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain
<romainm@sympatico.ca>
> > > > > wrote:
> > > > >
> > > > > >Unless you 'really' know what you are doing, you cannot make the
coax
> > > > > >shorter.
> > > > > >
> > > > > >Mike
> > > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > >88 Cherokee 235 BFG AT's
> > > > > >
> > > > > >TW wrote:
> > > > > >>
> > > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now
the
> > > > weekend
> > > > > >> will be spent installing it.
> > > > > >>
> > > > > >> I was thinking how would it look if I could somehow install the
CB
> > > > antenna
> > > > > >> on the exact opposite side of the radio antenna (same height
and
> > spot).
> > > > My
> > > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> > left
> > > > side
> > > > > >> would ensure coax is shortest and the antenna would be somewhat
in
> > the
> > > > > >> middle of the truck (though to one side). Any ideas or photos
of
> > such
> > > > an
> > > > > >> install?
> > > > > >>
> > > > > >> Thanks for all the help guys. Its much appreciated.
> > > > >
behind what he writes. I have an electrical engineering background and what
he says is right on the money. I personally know him very well too and he
has a solid background in this "stuff". Plus we are both heavily into ham
radio and this 18' myth was shot down in ham radio antenna circles many
years ago.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407C0A59.25F5A661@sympatico.ca...
> That is one person's opinion Jerry and I don't know that person from a
> hole in the ground.
>
> Though I did notice the reception seemed better at 12' than 18' and that
> having a cable 'not' in one of those multiples really messes up data
> packets. Transmitter makers like Ericsson also call for the 12' or 18'
> lines and warn not to coil them which can 'short' the RF out.
>
> I haven't played with enough voice systems to try and set the SWR with
> unmatched cables. Have you?
>
> Mike
>
> Jerry Bransford wrote:
> >
> > Here's one nice writeup on the 18' cable myth you may enjoy reading
Mike...
> > http://www.stu-offroad.com/misc/myth-1.htm
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:407BF51F.15C541BE@sympatico.ca...
> > > Ya????
> > >
> > > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > > oh man I could sure tell when someone had been messing with a cable.
> > >
> > > We were transmitting data over the system and with a messed up coax
the
> > > retries went up exponentially. We needed an 18' or a 12' or a 6'
cable
> > > to have good clean reception. If someone chopped 2' off in a door, I
> > > would need to fix it by cutting 4' more off.
> > >
> > > Now for that 'ear' test, well I guess a crackle won't hurt sound like
it
> > > does data.
> > >
> > > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > > either eh?
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Jerry Bransford wrote:
> > > >
> > > > Exactly... the 18' coax length recommendation for CB radios is an
> > old-wive's
> > > > tale... a complete myth.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > To email, remove 'me' from my email address
> > > > N6TAY, PP-ASEL
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > >
> > > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in
message
> > > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > > Mike, I don't mean to be an *** but I've gotta disagree with you
on
> > > > > the coax length thing :) That's a very common misconception but
it
> > > > > just ain't so, unless you're running a really non-standard
antenna
> > > > > the coax length doesn't make any major difference.
> > > > >
> > > > > In theory, shorter is better but for the difference in length
thats
> > > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > > notice any difference.
> > > > >
> > > > > The only concern I'd have with shortening the coax run would be
> > > > > getting the connector properly installed, may take a try or two
for a
> > > > > first timer but not out of the question.
> > > > >
> > > > > -Howard.
> > > > >
> > > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain
<romainm@sympatico.ca>
> > > > > wrote:
> > > > >
> > > > > >Unless you 'really' know what you are doing, you cannot make the
coax
> > > > > >shorter.
> > > > > >
> > > > > >Mike
> > > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > >88 Cherokee 235 BFG AT's
> > > > > >
> > > > > >TW wrote:
> > > > > >>
> > > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now
the
> > > > weekend
> > > > > >> will be spent installing it.
> > > > > >>
> > > > > >> I was thinking how would it look if I could somehow install the
CB
> > > > antenna
> > > > > >> on the exact opposite side of the radio antenna (same height
and
> > spot).
> > > > My
> > > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> > left
> > > > side
> > > > > >> would ensure coax is shortest and the antenna would be somewhat
in
> > the
> > > > > >> middle of the truck (though to one side). Any ideas or photos
of
> > such
> > > > an
> > > > > >> install?
> > > > > >>
> > > > > >> Thanks for all the help guys. Its much appreciated.
> > > > >
#228
Guest
Posts: n/a
Re: CB Radio or PRS - Update
Just read it carefully Mike and perhaps you'll see the electronic theory
behind what he writes. I have an electrical engineering background and what
he says is right on the money. I personally know him very well too and he
has a solid background in this "stuff". Plus we are both heavily into ham
radio and this 18' myth was shot down in ham radio antenna circles many
years ago.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407C0A59.25F5A661@sympatico.ca...
> That is one person's opinion Jerry and I don't know that person from a
> hole in the ground.
>
> Though I did notice the reception seemed better at 12' than 18' and that
> having a cable 'not' in one of those multiples really messes up data
> packets. Transmitter makers like Ericsson also call for the 12' or 18'
> lines and warn not to coil them which can 'short' the RF out.
>
> I haven't played with enough voice systems to try and set the SWR with
> unmatched cables. Have you?
>
> Mike
>
> Jerry Bransford wrote:
> >
> > Here's one nice writeup on the 18' cable myth you may enjoy reading
Mike...
> > http://www.stu-offroad.com/misc/myth-1.htm
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:407BF51F.15C541BE@sympatico.ca...
> > > Ya????
> > >
> > > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > > oh man I could sure tell when someone had been messing with a cable.
> > >
> > > We were transmitting data over the system and with a messed up coax
the
> > > retries went up exponentially. We needed an 18' or a 12' or a 6'
cable
> > > to have good clean reception. If someone chopped 2' off in a door, I
> > > would need to fix it by cutting 4' more off.
> > >
> > > Now for that 'ear' test, well I guess a crackle won't hurt sound like
it
> > > does data.
> > >
> > > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > > either eh?
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Jerry Bransford wrote:
> > > >
> > > > Exactly... the 18' coax length recommendation for CB radios is an
> > old-wive's
> > > > tale... a complete myth.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > To email, remove 'me' from my email address
> > > > N6TAY, PP-ASEL
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > >
> > > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in
message
> > > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > > Mike, I don't mean to be an *** but I've gotta disagree with you
on
> > > > > the coax length thing :) That's a very common misconception but
it
> > > > > just ain't so, unless you're running a really non-standard
antenna
> > > > > the coax length doesn't make any major difference.
> > > > >
> > > > > In theory, shorter is better but for the difference in length
thats
> > > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > > notice any difference.
> > > > >
> > > > > The only concern I'd have with shortening the coax run would be
> > > > > getting the connector properly installed, may take a try or two
for a
> > > > > first timer but not out of the question.
> > > > >
> > > > > -Howard.
> > > > >
> > > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain
<romainm@sympatico.ca>
> > > > > wrote:
> > > > >
> > > > > >Unless you 'really' know what you are doing, you cannot make the
coax
> > > > > >shorter.
> > > > > >
> > > > > >Mike
> > > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > >88 Cherokee 235 BFG AT's
> > > > > >
> > > > > >TW wrote:
> > > > > >>
> > > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now
the
> > > > weekend
> > > > > >> will be spent installing it.
> > > > > >>
> > > > > >> I was thinking how would it look if I could somehow install the
CB
> > > > antenna
> > > > > >> on the exact opposite side of the radio antenna (same height
and
> > spot).
> > > > My
> > > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> > left
> > > > side
> > > > > >> would ensure coax is shortest and the antenna would be somewhat
in
> > the
> > > > > >> middle of the truck (though to one side). Any ideas or photos
of
> > such
> > > > an
> > > > > >> install?
> > > > > >>
> > > > > >> Thanks for all the help guys. Its much appreciated.
> > > > >
behind what he writes. I have an electrical engineering background and what
he says is right on the money. I personally know him very well too and he
has a solid background in this "stuff". Plus we are both heavily into ham
radio and this 18' myth was shot down in ham radio antenna circles many
years ago.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407C0A59.25F5A661@sympatico.ca...
> That is one person's opinion Jerry and I don't know that person from a
> hole in the ground.
>
> Though I did notice the reception seemed better at 12' than 18' and that
> having a cable 'not' in one of those multiples really messes up data
> packets. Transmitter makers like Ericsson also call for the 12' or 18'
> lines and warn not to coil them which can 'short' the RF out.
>
> I haven't played with enough voice systems to try and set the SWR with
> unmatched cables. Have you?
>
> Mike
>
> Jerry Bransford wrote:
> >
> > Here's one nice writeup on the 18' cable myth you may enjoy reading
Mike...
> > http://www.stu-offroad.com/misc/myth-1.htm
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:407BF51F.15C541BE@sympatico.ca...
> > > Ya????
> > >
> > > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > > oh man I could sure tell when someone had been messing with a cable.
> > >
> > > We were transmitting data over the system and with a messed up coax
the
> > > retries went up exponentially. We needed an 18' or a 12' or a 6'
cable
> > > to have good clean reception. If someone chopped 2' off in a door, I
> > > would need to fix it by cutting 4' more off.
> > >
> > > Now for that 'ear' test, well I guess a crackle won't hurt sound like
it
> > > does data.
> > >
> > > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > > either eh?
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Jerry Bransford wrote:
> > > >
> > > > Exactly... the 18' coax length recommendation for CB radios is an
> > old-wive's
> > > > tale... a complete myth.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > To email, remove 'me' from my email address
> > > > N6TAY, PP-ASEL
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > >
> > > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in
message
> > > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > > Mike, I don't mean to be an *** but I've gotta disagree with you
on
> > > > > the coax length thing :) That's a very common misconception but
it
> > > > > just ain't so, unless you're running a really non-standard
antenna
> > > > > the coax length doesn't make any major difference.
> > > > >
> > > > > In theory, shorter is better but for the difference in length
thats
> > > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > > notice any difference.
> > > > >
> > > > > The only concern I'd have with shortening the coax run would be
> > > > > getting the connector properly installed, may take a try or two
for a
> > > > > first timer but not out of the question.
> > > > >
> > > > > -Howard.
> > > > >
> > > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain
<romainm@sympatico.ca>
> > > > > wrote:
> > > > >
> > > > > >Unless you 'really' know what you are doing, you cannot make the
coax
> > > > > >shorter.
> > > > > >
> > > > > >Mike
> > > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > >88 Cherokee 235 BFG AT's
> > > > > >
> > > > > >TW wrote:
> > > > > >>
> > > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now
the
> > > > weekend
> > > > > >> will be spent installing it.
> > > > > >>
> > > > > >> I was thinking how would it look if I could somehow install the
CB
> > > > antenna
> > > > > >> on the exact opposite side of the radio antenna (same height
and
> > spot).
> > > > My
> > > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> > left
> > > > side
> > > > > >> would ensure coax is shortest and the antenna would be somewhat
in
> > the
> > > > > >> middle of the truck (though to one side). Any ideas or photos
of
> > such
> > > > an
> > > > > >> install?
> > > > > >>
> > > > > >> Thanks for all the help guys. Its much appreciated.
> > > > >
#229
Guest
Posts: n/a
Re: CB Radio or PRS - Update
Just read it carefully Mike and perhaps you'll see the electronic theory
behind what he writes. I have an electrical engineering background and what
he says is right on the money. I personally know him very well too and he
has a solid background in this "stuff". Plus we are both heavily into ham
radio and this 18' myth was shot down in ham radio antenna circles many
years ago.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407C0A59.25F5A661@sympatico.ca...
> That is one person's opinion Jerry and I don't know that person from a
> hole in the ground.
>
> Though I did notice the reception seemed better at 12' than 18' and that
> having a cable 'not' in one of those multiples really messes up data
> packets. Transmitter makers like Ericsson also call for the 12' or 18'
> lines and warn not to coil them which can 'short' the RF out.
>
> I haven't played with enough voice systems to try and set the SWR with
> unmatched cables. Have you?
>
> Mike
>
> Jerry Bransford wrote:
> >
> > Here's one nice writeup on the 18' cable myth you may enjoy reading
Mike...
> > http://www.stu-offroad.com/misc/myth-1.htm
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:407BF51F.15C541BE@sympatico.ca...
> > > Ya????
> > >
> > > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > > oh man I could sure tell when someone had been messing with a cable.
> > >
> > > We were transmitting data over the system and with a messed up coax
the
> > > retries went up exponentially. We needed an 18' or a 12' or a 6'
cable
> > > to have good clean reception. If someone chopped 2' off in a door, I
> > > would need to fix it by cutting 4' more off.
> > >
> > > Now for that 'ear' test, well I guess a crackle won't hurt sound like
it
> > > does data.
> > >
> > > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > > either eh?
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Jerry Bransford wrote:
> > > >
> > > > Exactly... the 18' coax length recommendation for CB radios is an
> > old-wive's
> > > > tale... a complete myth.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > To email, remove 'me' from my email address
> > > > N6TAY, PP-ASEL
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > >
> > > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in
message
> > > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > > Mike, I don't mean to be an *** but I've gotta disagree with you
on
> > > > > the coax length thing :) That's a very common misconception but
it
> > > > > just ain't so, unless you're running a really non-standard
antenna
> > > > > the coax length doesn't make any major difference.
> > > > >
> > > > > In theory, shorter is better but for the difference in length
thats
> > > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > > notice any difference.
> > > > >
> > > > > The only concern I'd have with shortening the coax run would be
> > > > > getting the connector properly installed, may take a try or two
for a
> > > > > first timer but not out of the question.
> > > > >
> > > > > -Howard.
> > > > >
> > > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain
<romainm@sympatico.ca>
> > > > > wrote:
> > > > >
> > > > > >Unless you 'really' know what you are doing, you cannot make the
coax
> > > > > >shorter.
> > > > > >
> > > > > >Mike
> > > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > >88 Cherokee 235 BFG AT's
> > > > > >
> > > > > >TW wrote:
> > > > > >>
> > > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now
the
> > > > weekend
> > > > > >> will be spent installing it.
> > > > > >>
> > > > > >> I was thinking how would it look if I could somehow install the
CB
> > > > antenna
> > > > > >> on the exact opposite side of the radio antenna (same height
and
> > spot).
> > > > My
> > > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> > left
> > > > side
> > > > > >> would ensure coax is shortest and the antenna would be somewhat
in
> > the
> > > > > >> middle of the truck (though to one side). Any ideas or photos
of
> > such
> > > > an
> > > > > >> install?
> > > > > >>
> > > > > >> Thanks for all the help guys. Its much appreciated.
> > > > >
behind what he writes. I have an electrical engineering background and what
he says is right on the money. I personally know him very well too and he
has a solid background in this "stuff". Plus we are both heavily into ham
radio and this 18' myth was shot down in ham radio antenna circles many
years ago.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
N6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:407C0A59.25F5A661@sympatico.ca...
> That is one person's opinion Jerry and I don't know that person from a
> hole in the ground.
>
> Though I did notice the reception seemed better at 12' than 18' and that
> having a cable 'not' in one of those multiples really messes up data
> packets. Transmitter makers like Ericsson also call for the 12' or 18'
> lines and warn not to coil them which can 'short' the RF out.
>
> I haven't played with enough voice systems to try and set the SWR with
> unmatched cables. Have you?
>
> Mike
>
> Jerry Bransford wrote:
> >
> > Here's one nice writeup on the 18' cable myth you may enjoy reading
Mike...
> > http://www.stu-offroad.com/misc/myth-1.htm
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > N6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:407BF51F.15C541BE@sympatico.ca...
> > > Ya????
> > >
> > > Ok, but I was the system op for a mobile fleet of 150 vehicles and man
> > > oh man I could sure tell when someone had been messing with a cable.
> > >
> > > We were transmitting data over the system and with a messed up coax
the
> > > retries went up exponentially. We needed an 18' or a 12' or a 6'
cable
> > > to have good clean reception. If someone chopped 2' off in a door, I
> > > would need to fix it by cutting 4' more off.
> > >
> > > Now for that 'ear' test, well I guess a crackle won't hurt sound like
it
> > > does data.
> > >
> > > And I guess having a 3' coax cable wouldn't mess up the SWR at all
> > > either eh?
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Jerry Bransford wrote:
> > > >
> > > > Exactly... the 18' coax length recommendation for CB radios is an
> > old-wive's
> > > > tale... a complete myth.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > To email, remove 'me' from my email address
> > > > N6TAY, PP-ASEL
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > >
> > > > "Howard Eisenhauer" <howarde@REMOVECAPShfx.eastlink.ca> wrote in
message
> > > > news:r5bm70lrn8vittitnannj9h9nfvotq23vn@4ax.com...
> > > > > Mike, I don't mean to be an *** but I've gotta disagree with you
on
> > > > > the coax length thing :) That's a very common misconception but
it
> > > > > just ain't so, unless you're running a really non-standard
antenna
> > > > > the coax length doesn't make any major difference.
> > > > >
> > > > > In theory, shorter is better but for the difference in length
thats
> > > > > possible in a vehicle I don't think the ol' mk.1 "ear" test will
> > > > > notice any difference.
> > > > >
> > > > > The only concern I'd have with shortening the coax run would be
> > > > > getting the connector properly installed, may take a try or two
for a
> > > > > first timer but not out of the question.
> > > > >
> > > > > -Howard.
> > > > >
> > > > > On Mon, 12 Apr 2004 09:22:38 -0400, Mike Romain
<romainm@sympatico.ca>
> > > > > wrote:
> > > > >
> > > > > >Unless you 'really' know what you are doing, you cannot make the
coax
> > > > > >shorter.
> > > > > >
> > > > > >Mike
> > > > > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > >88 Cherokee 235 BFG AT's
> > > > > >
> > > > > >TW wrote:
> > > > > >>
> > > > > >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now
the
> > > > weekend
> > > > > >> will be spent installing it.
> > > > > >>
> > > > > >> I was thinking how would it look if I could somehow install the
CB
> > > > antenna
> > > > > >> on the exact opposite side of the radio antenna (same height
and
> > spot).
> > > > My
> > > > > >> radio antenna is on the right side of the TJ, CB antenna on the
> > left
> > > > side
> > > > > >> would ensure coax is shortest and the antenna would be somewhat
in
> > the
> > > > > >> middle of the truck (though to one side). Any ideas or photos
of
> > such
> > > > an
> > > > > >> install?
> > > > > >>
> > > > > >> Thanks for all the help guys. Its much appreciated.
> > > > >
#230
Guest
Posts: n/a
Re: CB Radio or PRS - Update -(long & semi OT)
Mike, I hope I didn't come across the wrong way on this, I have no
desire to start a flame war over this. You have, IMHO, a well
deserved reputation on this group for knowing your stuff, but I still
think you're wrong.
My position on this comes from being an electronics technician
working in the radio field for somewheres on the upper side of 30
years. An awful lot of that time has been spent testing &
troubleshooting antenna & transmission lines on everything from
microwave relay links to CBs, with a bunch of cell tower & military
stuff in between. I think by now I'm pretty well grounded in both the
theory & the practice.
As far as CBs are concerned, if your antenna is properly designed &
installed then the length of the coax line & whether or not the coax
is coiled up is immaterial to the operation of the system. If there's
a problem with the installation then you may well have problems with
the coax radiating the reflected power that was supposed to go out the
antenna. You may also experience the signal trying to get to ground
through you power cabling instead of the coax shield. In this case
you may well have interferance problems inside the vehicle & changing
the length of the coax may affect your SWR meter's reading, but
changing the length to make the meter read "right" is really only
covering up the problem. The best way to check the SWR is with the
meter inserted into the line right at the antenna, unfortunately the
way most antennas are built makes this difficult. To get the real
picture of whats happening from the radio end of the line requires an
antenna line analyzer ($$$- google "Anritsu Sitemaster" for one model,
did I mention "$$$"?).
I saw what you said about the problems you were having with your fleet
vehicles & the data systems, I've seen it too. When the digital
"TDMA" vehicle mount cell phones came out, we really had to crack down
on the installers to get the VSWR down as far as possible, otherwise
the bit error rate went crazy. We also made them trim the coax to
"just long enough" in order to eliminate the loss from the extra
length, which admittedly is a lot worse @ 850 Mhz than 27 ;>.
If your SWR is high & you can't do anything about the antenna then you
can reduce to problems inside the vehicle by (gasp) looping the coax a
few times at the antenna to form an rf choke, this prevents the
reflected signal from travelling back down the outside of the coax.
Another trick that works is to get one of those ferrite sleeves that
you see showing up on power & telephone cables these days. Stick it
over the coax at the base of the antenna & it'll do the same thing as
the loops. Running the power leads through one of these things
wouldn't hurt either.
Tell ya what- next time you're in Halifax drop me a note, I'll get
some test equipment togeather & I'll try to show to prove to you in
person what I'm saying is right. If I'm wrong I'll buy you a 24, If
I'm right you do the buying, How's that?
-Howard.
p.s.- I drink Keith's :).
On Tue, 13 Apr 2004 10:10:35 -0400, Mike Romain <romainm@sympatico.ca>
wrote:
>You are mistaken.
>
>The coil can act as a pickup for noise and it can put out RF.
>
>You should really read the TSB out on how to install a transmitter into
>a new modern vehicle or you will void your vehicle warranty.
>
>The antenna cable can and will interfere with the vehicle's onboard
>electronics. It 'Will' cut out anti-lock brakes. It 'will' cut out a
>Jeep automatic tranny module so every time you key up you go into
>neutral. It also will interfere with the fuel injectors.
>
>GM, Chrysler and all the rest have booklets out now on how to properly
>wire a transmitter in order to avoid voiding the vehicle warranty.
>
>GM insists on minimum 10 ga. power and ground run right to the battery
>and double fused there on the opposite side of the vehicle from the
>wiring harness. The antenna must run on the opposite side from the
>harness too.
>
>So for the power lines, to have a CB on the center or passenger side of
>a GM van, the wires have to run up the passenger side fender to the
>front of the vehicle, across the front of the radiator supports and back
>to the battery. If you run them across the firewall, you void the
>warranty for the vehicle's electronics, all of them.
>
>Mike
>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>88 Cherokee 235 BFG AT's
>
>Howard Eisenhauer wrote:
>>
>> TW, another old wive's tale about the coiled coax thing. If
>> everything is working the way it should all the signal travels through
>> the coax between the center conductor & the inside of the braid, not
>> along the outside where coiling it would have any effect. Coiling it,
>> tying it up or crocheting it for that matter will not make any
>> differencet :). There are actually some situations where coiling it
>> up would make a system work better, but you won't run into them in a
>> jeep using a commercially available antenna.
>>
>> Howard.
>>
>> On Mon, 12 Apr 2004 14:40:20 GMT, twaldron
>> <thomas@OBVIOUSrubicons.com> wrote:
>>
>> >The rule of thumb is to be 3 ft. from any other antennas. Shortening
>> >your coax run in your TJ is not going to help your transmit range. Just
>> >make sure you don't leave a coil of coax somewhere.
>> >
>> >TW wrote:
>> >
>> >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the weekend
>> >> will be spent installing it.
>> >>
>> >> I was thinking how would it look if I could somehow install the CB antenna
>> >> on the exact opposite side of the radio antenna (same height and spot). My
>> >> radio antenna is on the right side of the TJ, CB antenna on the left side
>> >> would ensure coax is shortest and the antenna would be somewhat in the
>> >> middle of the truck (though to one side). Any ideas or photos of such an
>> >> install?
>> >>
>> >> Thanks for all the help guys. Its much appreciated.
desire to start a flame war over this. You have, IMHO, a well
deserved reputation on this group for knowing your stuff, but I still
think you're wrong.
My position on this comes from being an electronics technician
working in the radio field for somewheres on the upper side of 30
years. An awful lot of that time has been spent testing &
troubleshooting antenna & transmission lines on everything from
microwave relay links to CBs, with a bunch of cell tower & military
stuff in between. I think by now I'm pretty well grounded in both the
theory & the practice.
As far as CBs are concerned, if your antenna is properly designed &
installed then the length of the coax line & whether or not the coax
is coiled up is immaterial to the operation of the system. If there's
a problem with the installation then you may well have problems with
the coax radiating the reflected power that was supposed to go out the
antenna. You may also experience the signal trying to get to ground
through you power cabling instead of the coax shield. In this case
you may well have interferance problems inside the vehicle & changing
the length of the coax may affect your SWR meter's reading, but
changing the length to make the meter read "right" is really only
covering up the problem. The best way to check the SWR is with the
meter inserted into the line right at the antenna, unfortunately the
way most antennas are built makes this difficult. To get the real
picture of whats happening from the radio end of the line requires an
antenna line analyzer ($$$- google "Anritsu Sitemaster" for one model,
did I mention "$$$"?).
I saw what you said about the problems you were having with your fleet
vehicles & the data systems, I've seen it too. When the digital
"TDMA" vehicle mount cell phones came out, we really had to crack down
on the installers to get the VSWR down as far as possible, otherwise
the bit error rate went crazy. We also made them trim the coax to
"just long enough" in order to eliminate the loss from the extra
length, which admittedly is a lot worse @ 850 Mhz than 27 ;>.
If your SWR is high & you can't do anything about the antenna then you
can reduce to problems inside the vehicle by (gasp) looping the coax a
few times at the antenna to form an rf choke, this prevents the
reflected signal from travelling back down the outside of the coax.
Another trick that works is to get one of those ferrite sleeves that
you see showing up on power & telephone cables these days. Stick it
over the coax at the base of the antenna & it'll do the same thing as
the loops. Running the power leads through one of these things
wouldn't hurt either.
Tell ya what- next time you're in Halifax drop me a note, I'll get
some test equipment togeather & I'll try to show to prove to you in
person what I'm saying is right. If I'm wrong I'll buy you a 24, If
I'm right you do the buying, How's that?
-Howard.
p.s.- I drink Keith's :).
On Tue, 13 Apr 2004 10:10:35 -0400, Mike Romain <romainm@sympatico.ca>
wrote:
>You are mistaken.
>
>The coil can act as a pickup for noise and it can put out RF.
>
>You should really read the TSB out on how to install a transmitter into
>a new modern vehicle or you will void your vehicle warranty.
>
>The antenna cable can and will interfere with the vehicle's onboard
>electronics. It 'Will' cut out anti-lock brakes. It 'will' cut out a
>Jeep automatic tranny module so every time you key up you go into
>neutral. It also will interfere with the fuel injectors.
>
>GM, Chrysler and all the rest have booklets out now on how to properly
>wire a transmitter in order to avoid voiding the vehicle warranty.
>
>GM insists on minimum 10 ga. power and ground run right to the battery
>and double fused there on the opposite side of the vehicle from the
>wiring harness. The antenna must run on the opposite side from the
>harness too.
>
>So for the power lines, to have a CB on the center or passenger side of
>a GM van, the wires have to run up the passenger side fender to the
>front of the vehicle, across the front of the radiator supports and back
>to the battery. If you run them across the firewall, you void the
>warranty for the vehicle's electronics, all of them.
>
>Mike
>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>88 Cherokee 235 BFG AT's
>
>Howard Eisenhauer wrote:
>>
>> TW, another old wive's tale about the coiled coax thing. If
>> everything is working the way it should all the signal travels through
>> the coax between the center conductor & the inside of the braid, not
>> along the outside where coiling it would have any effect. Coiling it,
>> tying it up or crocheting it for that matter will not make any
>> differencet :). There are actually some situations where coiling it
>> up would make a system work better, but you won't run into them in a
>> jeep using a commercially available antenna.
>>
>> Howard.
>>
>> On Mon, 12 Apr 2004 14:40:20 GMT, twaldron
>> <thomas@OBVIOUSrubicons.com> wrote:
>>
>> >The rule of thumb is to be 3 ft. from any other antennas. Shortening
>> >your coax run in your TJ is not going to help your transmit range. Just
>> >make sure you don't leave a coil of coax somewhere.
>> >
>> >TW wrote:
>> >
>> >> I went out and bought an AM CB radio (Uniden Pro 510XL). Now the weekend
>> >> will be spent installing it.
>> >>
>> >> I was thinking how would it look if I could somehow install the CB antenna
>> >> on the exact opposite side of the radio antenna (same height and spot). My
>> >> radio antenna is on the right side of the TJ, CB antenna on the left side
>> >> would ensure coax is shortest and the antenna would be somewhat in the
>> >> middle of the truck (though to one side). Any ideas or photos of such an
>> >> install?
>> >>
>> >> Thanks for all the help guys. Its much appreciated.