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Discussion Starter · #1 ·
Does anyone run a CB or Ham radio in their Trax. I run both now that I have my Technician license, KE8JLG. I had been running a $35 Cobra with a Lil Wil magnet mount antenna. I upgraded that with a Cobra 29LTD, takes up more room, and found out this radio didn't like the 2 Meter magnet mount on the roof with it. The Ham radio is a Yaesu FT-7900. The CB threw a fit and the antenna fault light would come on and the standing wave meter pegged on the meter. I chatted with another Ham and gave him the rundown and he informed me the 2M antenna was reflecting the signal back causing the fault. To test this I took the 2M off the roof and and tested the SW on the CB, dang, problem fixed. So to run the CB with the 2M on the roof I had to relocate and change the CB to a whip on the rear hatch. I was informed the CB ant needed to be lower than the 2M, thats why the hatch was used. Now this caused another issue, grounding. After testing the hatch with a multi-meter I discovered the hatch has very poor grounding. So I had to ground the whip mount via a grounding wire directly to the hatch and then I had to ground the hatch via grounding wire to the body. That fixed that issue. Now the CB plays nice with the 2 Meter.

I will post pics if anyone is interested. It's never too late to learn something new...
 

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Does your CB have an antenna SWR meter function built in? If not find or borrow an SWR meter and trim the coax (or antenna) for as close to a 1:1 match as possible on channels 1 and 40. The better antennas are not the cheap ones.
 

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Discussion Starter · #3 ·
Does your CB have an antenna SWR meter function built in? If not find or borrow an SWR meter and trim the coax (or antenna) for as close to a 1:1 match as possible on channels 1 and 40. The better antennas are not the cheap ones.
The CB has the built in SW Meter and I also have a separate SW meter for testing. I also have a 2 Meter SW test Meter. The CB ant is now the adjustable FireStick . Its position in the left rear corner is a compromise and I know it is not ideal. The CB is for relatively close proximity comms for highway travel. A < = 2 SW, is acceptable. On channel 19 its 1.7 .

I'm happy that I found a compromise with no serious noise issues or airbags going off. LOL ....
 

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I'm trying to decide where to put an antenna for a 2m/70cm dual bander. My first choice would be an NMO mount in the center of the roof. I just can't figure out the best way to get the coax around the airbags. Any suggestions?
 
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