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- - HAM antenna (https://www.jeepscanada.com/jeep-mailing-list-32/ham-antenna-46809/)

You should always tap 2-way radio power DIRECTLY from the battery
terminals. Make these leads fused.

tw

SnoMan wrote:
> The "problem" with this info is it does not cover one of the bigger
> threats to car electronics or how to deal with it. One of the biggest
> potentail problems is a RF feedback through power leg of transceiver
> into cars electrical system. None of those tips deal with that. The
> way to combat that is to install a filter choke in power legs of
> transceiver to block it. I have done this for many years in many
> vehcle with Ham radio equipment and I have never had a problem even
> with cars that actually advise against it.
> -----------------
> TheSnoMan.com

--
PLEASE REMOVE THE "OBVIOUS" TO REPLY.

> By "power leg" , do you mean the 12 volt wire for power ?

On Thu, 28 Jun 2007 23:00:29 -0400, "James" <jnipperxxx@nospamfdn.com>
wrote:

>> By "power leg" , do you mean the 12 volt wire for power ?
>
Yes

Eartlink wrote:
> Need some ideas or a write up on the installation of antennas on 2001
> wranglers...
>
> Thank you.

Yes, there are DC booklets out there if you ask at the dealer. GM has
had this booklet out for years:

http://service.gm.com/techlineinfo/radio.html

I did one contract for 9 years installing and servicing transmitter
systems in a fleet of 200 delivery vehicles.

You 'really' need to stay away from the electrical system of the vehicle
and run two fused lines directly to the battery for the transmitter like
the GM booklet 'clearly' states. (some GM's have a nice power tap
there, Jeeps don't)

If you use any of the vehicle's electrics, the vehicle warranty is void.

For a GM system you 'must' use 10 ga. wiring minimum for these power
leads in order to not void the vehicle's warranty so I use twisted 10
ga. with the built in silk string cardboard condenser on all of them.
(Type SJOW or SOW was recommended to me by Ericsson who made the
transmitters I was installing, so I used it and never had RF issues.)

Fusing the negative line is very important because if the vehicle loses
a ground for whatever reason. it can/will pull one through the
transmitter and let the magic smoke out of the transmitter big time.

The routing of the wiring needs to be on the opposite side of the
vehicle from the vehicle's harness and computer and should only cross it
at right angles if you 'have' to cross over other wires. It is better
to route the wire out to the front and cross the front top of the rad's
brace then come back to the battery rather than run across the firewall
where the rest of the wires run if you have to cross from side to side.
(GM makes special note of this)

If you get the wiring too close to any vehicle systems, strange things
happen like the ABS module fails, digital dashes go insane and in a TJ
auto, as was reported on this group, the tranny can jump to neutral
every time you key up.

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...
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