Re: CB power
 

Sorry but you got it wrong...
Unless the antenna is one of those "no-ground plane" types
The antenna base MUST be grounded. The vehicle body
(otherwise known as the ground plane) is part of the antenna.
Please show me an example of a "isolated mounting".
Where do you buy them?





XS11E wrote:
> jeff <jalowe44.invalid@hotmail.com.invalid> wrote:
>
>
>>Any chassis ground is as effective as a separate ground lead.
>>Metal to metal anywhere on a jeep should be less than an ohm.
>
>
> And that's EXACTLY why one isolates the antenna and CB in a Jeep to
> avoid ground loops. Jeeps are notorious for not having good grounds,
> particularly back in the days when CBs were more common. It was very
> difficult to get a good noise free signal in Wagoneers and Cherokees
> leading to the development of isolated mountings to avoid ground loops.
>
> Grounding the antenna to the body (as most installations do) is
> surprisingly unsuccessful when the body grounds are rusted away.
>
>
>

Re: CB power
 

Here's one from Chrysler

http://www.neons.org/neontsb/TSB/08/081698.htm

twaldron wrote:

> Thanks for the GM docs, Mike...here's Ford's:
>
> http://www.fordemc.com/docs/download...adio_Guide.pdf
>
> Ford Motor Company vehicles are designed and tested for safe operation
> with properly installed and properly used land mobile/amateur radio
> communication equipment with up to 100 Watt transmitter power.
>
> Special design considerations are incorporated into all Ford vehicle
> electronic systems to provide immunity to radio frequency signals. To
> maintain compatibility with vehicle electronic systems, mobile
> two-way radio and telephone equipment must be installed properly by
> trained personnel, observing these general guidelines:
>
>
Power connections should be made directly to the battery and fused as
> close to the battery as possible. Avoid using cigar lighter or “Power
> Point” receptacles as power sources for radio communication equipment.
>
> Antennas for two-way radios should be mounted on the roof or the rear
> area of the vehicle. Care should be used in mounting antennas with
> magnet bases, since magnets may affect the accuracy or operation of the
> compass on vehicles, if so equipped.
>
> The antenna cable should be high quality, fully shielded coaxial cable,
> and kept as short as practical. Avoid routing the antenna cable in
> parallel with vehicle wiring over long distances.
>
> Carefully match the antenna and cable to the radio to achieve a low
> Standing Wave Ratio (SWR) and to avoid RF currents on the antenna cable
> shield.
>
> tw

Re: CB power
 

Here's one from Chrysler

http://www.neons.org/neontsb/TSB/08/081698.htm

twaldron wrote:

> Thanks for the GM docs, Mike...here's Ford's:
>
> http://www.fordemc.com/docs/download...adio_Guide.pdf
>
> Ford Motor Company vehicles are designed and tested for safe operation
> with properly installed and properly used land mobile/amateur radio
> communication equipment with up to 100 Watt transmitter power.
>
> Special design considerations are incorporated into all Ford vehicle
> electronic systems to provide immunity to radio frequency signals. To
> maintain compatibility with vehicle electronic systems, mobile
> two-way radio and telephone equipment must be installed properly by
> trained personnel, observing these general guidelines:
>
>
Power connections should be made directly to the battery and fused as
> close to the battery as possible. Avoid using cigar lighter or “Power
> Point” receptacles as power sources for radio communication equipment.
>
> Antennas for two-way radios should be mounted on the roof or the rear
> area of the vehicle. Care should be used in mounting antennas with
> magnet bases, since magnets may affect the accuracy or operation of the
> compass on vehicles, if so equipped.
>
> The antenna cable should be high quality, fully shielded coaxial cable,
> and kept as short as practical. Avoid routing the antenna cable in
> parallel with vehicle wiring over long distances.
>
> Carefully match the antenna and cable to the radio to achieve a low
> Standing Wave Ratio (SWR) and to avoid RF currents on the antenna cable
> shield.
>
> tw

Re: CB power
 

Here's one from Chrysler

http://www.neons.org/neontsb/TSB/08/081698.htm

twaldron wrote:

> Thanks for the GM docs, Mike...here's Ford's:
>
> http://www.fordemc.com/docs/download...adio_Guide.pdf
>
> Ford Motor Company vehicles are designed and tested for safe operation
> with properly installed and properly used land mobile/amateur radio
> communication equipment with up to 100 Watt transmitter power.
>
> Special design considerations are incorporated into all Ford vehicle
> electronic systems to provide immunity to radio frequency signals. To
> maintain compatibility with vehicle electronic systems, mobile
> two-way radio and telephone equipment must be installed properly by
> trained personnel, observing these general guidelines:
>
>
Power connections should be made directly to the battery and fused as
> close to the battery as possible. Avoid using cigar lighter or “Power
> Point” receptacles as power sources for radio communication equipment.
>
> Antennas for two-way radios should be mounted on the roof or the rear
> area of the vehicle. Care should be used in mounting antennas with
> magnet bases, since magnets may affect the accuracy or operation of the
> compass on vehicles, if so equipped.
>
> The antenna cable should be high quality, fully shielded coaxial cable,
> and kept as short as practical. Avoid routing the antenna cable in
> parallel with vehicle wiring over long distances.
>
> Carefully match the antenna and cable to the radio to achieve a low
> Standing Wave Ratio (SWR) and to avoid RF currents on the antenna cable
> shield.
>
> tw

Re: CB power
 

Here's one from Chrysler

http://www.neons.org/neontsb/TSB/08/081698.htm

twaldron wrote:

> Thanks for the GM docs, Mike...here's Ford's:
>
> http://www.fordemc.com/docs/download...adio_Guide.pdf
>
> Ford Motor Company vehicles are designed and tested for safe operation
> with properly installed and properly used land mobile/amateur radio
> communication equipment with up to 100 Watt transmitter power.
>
> Special design considerations are incorporated into all Ford vehicle
> electronic systems to provide immunity to radio frequency signals. To
> maintain compatibility with vehicle electronic systems, mobile
> two-way radio and telephone equipment must be installed properly by
> trained personnel, observing these general guidelines:
>
>
Power connections should be made directly to the battery and fused as
> close to the battery as possible. Avoid using cigar lighter or “Power
> Point” receptacles as power sources for radio communication equipment.
>
> Antennas for two-way radios should be mounted on the roof or the rear
> area of the vehicle. Care should be used in mounting antennas with
> magnet bases, since magnets may affect the accuracy or operation of the
> compass on vehicles, if so equipped.
>
> The antenna cable should be high quality, fully shielded coaxial cable,
> and kept as short as practical. Avoid routing the antenna cable in
> parallel with vehicle wiring over long distances.
>
> Carefully match the antenna and cable to the radio to achieve a low
> Standing Wave Ratio (SWR) and to avoid RF currents on the antenna cable
> shield.
>
> tw

Re: CB power
 

This guy has no clue what the difference between a ground plane and an
electrical ground is. You're beating your head. "No ground plane" type
antennas are the absolute last resort on a vehicle and should never be
used on a Jeep with a metal body...Fiberglass tubs, a corvette, or a
fiberglass boat.

tw

FrankW wrote:
> Sorry but you got it wrong...
> Unless the antenna is one of those "no-ground plane" types
> The antenna base MUST be grounded. The vehicle body
> (otherwise known as the ground plane) is part of the antenna.
> Please show me an example of a "isolated mounting".
> Where do you buy them?
>
>
>
>
>
> XS11E wrote:
>
>> jeff <jalowe44.invalid@hotmail.com.invalid> wrote:
>>
>>
>>> Any chassis ground is as effective as a separate ground lead.
>>> Metal to metal anywhere on a jeep should be less than an ohm.
>>
>>
>>
>> And that's EXACTLY why one isolates the antenna and CB in a Jeep to
>> avoid ground loops. Jeeps are notorious for not having good grounds,
>> particularly back in the days when CBs were more common. It was very
>> difficult to get a good noise free signal in Wagoneers and Cherokees
>> leading to the development of isolated mountings to avoid ground loops.
>>
>> Grounding the antenna to the body (as most installations do) is
>> surprisingly unsuccessful when the body grounds are rusted away.
>>
>>
>>
>

Re: CB power
 

This guy has no clue what the difference between a ground plane and an
electrical ground is. You're beating your head. "No ground plane" type
antennas are the absolute last resort on a vehicle and should never be
used on a Jeep with a metal body...Fiberglass tubs, a corvette, or a
fiberglass boat.

tw

FrankW wrote:
> Sorry but you got it wrong...
> Unless the antenna is one of those "no-ground plane" types
> The antenna base MUST be grounded. The vehicle body
> (otherwise known as the ground plane) is part of the antenna.
> Please show me an example of a "isolated mounting".
> Where do you buy them?
>
>
>
>
>
> XS11E wrote:
>
>> jeff <jalowe44.invalid@hotmail.com.invalid> wrote:
>>
>>
>>> Any chassis ground is as effective as a separate ground lead.
>>> Metal to metal anywhere on a jeep should be less than an ohm.
>>
>>
>>
>> And that's EXACTLY why one isolates the antenna and CB in a Jeep to
>> avoid ground loops. Jeeps are notorious for not having good grounds,
>> particularly back in the days when CBs were more common. It was very
>> difficult to get a good noise free signal in Wagoneers and Cherokees
>> leading to the development of isolated mountings to avoid ground loops.
>>
>> Grounding the antenna to the body (as most installations do) is
>> surprisingly unsuccessful when the body grounds are rusted away.
>>
>>
>>
>

Re: CB power
 

This guy has no clue what the difference between a ground plane and an
electrical ground is. You're beating your head. "No ground plane" type
antennas are the absolute last resort on a vehicle and should never be
used on a Jeep with a metal body...Fiberglass tubs, a corvette, or a
fiberglass boat.

tw

FrankW wrote:
> Sorry but you got it wrong...
> Unless the antenna is one of those "no-ground plane" types
> The antenna base MUST be grounded. The vehicle body
> (otherwise known as the ground plane) is part of the antenna.
> Please show me an example of a "isolated mounting".
> Where do you buy them?
>
>
>
>
>
> XS11E wrote:
>
>> jeff <jalowe44.invalid@hotmail.com.invalid> wrote:
>>
>>
>>> Any chassis ground is as effective as a separate ground lead.
>>> Metal to metal anywhere on a jeep should be less than an ohm.
>>
>>
>>
>> And that's EXACTLY why one isolates the antenna and CB in a Jeep to
>> avoid ground loops. Jeeps are notorious for not having good grounds,
>> particularly back in the days when CBs were more common. It was very
>> difficult to get a good noise free signal in Wagoneers and Cherokees
>> leading to the development of isolated mountings to avoid ground loops.
>>
>> Grounding the antenna to the body (as most installations do) is
>> surprisingly unsuccessful when the body grounds are rusted away.
>>
>>
>>
>

Re: CB power
 

This guy has no clue what the difference between a ground plane and an
electrical ground is. You're beating your head. "No ground plane" type
antennas are the absolute last resort on a vehicle and should never be
used on a Jeep with a metal body...Fiberglass tubs, a corvette, or a
fiberglass boat.

tw

FrankW wrote:
> Sorry but you got it wrong...
> Unless the antenna is one of those "no-ground plane" types
> The antenna base MUST be grounded. The vehicle body
> (otherwise known as the ground plane) is part of the antenna.
> Please show me an example of a "isolated mounting".
> Where do you buy them?
>
>
>
>
>
> XS11E wrote:
>
>> jeff <jalowe44.invalid@hotmail.com.invalid> wrote:
>>
>>
>>> Any chassis ground is as effective as a separate ground lead.
>>> Metal to metal anywhere on a jeep should be less than an ohm.
>>
>>
>>
>> And that's EXACTLY why one isolates the antenna and CB in a Jeep to
>> avoid ground loops. Jeeps are notorious for not having good grounds,
>> particularly back in the days when CBs were more common. It was very
>> difficult to get a good noise free signal in Wagoneers and Cherokees
>> leading to the development of isolated mountings to avoid ground loops.
>>
>> Grounding the antenna to the body (as most installations do) is
>> surprisingly unsuccessful when the body grounds are rusted away.
>>
>>
>>
>

Re: CB power
 

XS11E wrote:
> jeff <jalowe44.invalid@hotmail.com.invalid> wrote:
>
>> Any chassis ground is as effective as a separate ground lead.
>> Metal to metal anywhere on a jeep should be less than an ohm.
>
> And that's EXACTLY why one isolates the antenna and CB in a Jeep to
> avoid ground loops. Jeeps are notorious for not having good grounds,
> particularly back in the days when CBs were more common. It was very
> difficult to get a good noise free signal in Wagoneers and Cherokees
> leading to the development of isolated mountings to avoid ground loops.
>
> Grounding the antenna to the body (as most installations do) is
> surprisingly unsuccessful when the body grounds are rusted away.
>
>
>

If you use the vehicle chassis as a ground in a new GM vehicle, you will
void the warranty for 'all' on board electronics of the vehicle. This
includes things like the ABS controller, ignition, etc...

You need to isolate transmitters these days.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)