Question about Cobra 29 LTD CB Radio

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My Meter Won't Move

Had the 29 with Wilson 4" Ant. installed for a couple weeks now & everything was working great....SWR 1.2 - 1.3 across all channels. Yesterday went out and just wanted to double check SWR, set button to "CAL" keyed Mic & needle barley moved, it just stayed all the way to the left. tried a few more times & needle wouldn't move. Did a few Radio checks(loud & clear @ both ends) & working like a champ. Went out today & needle went all the way & then got to check SWR. Just checked again and needle went half way up on "CAL" and no further. What do think, bad Meter ??

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  • deadlyfalcon Jan 22, 2009

    My RS SWR meter only cranks up halfway to the Cal mark on the dial when I've keyed the mic and have the switch on Cal. It's only ever worked once. Is there a way to screw these things up??? Or is my radio low on power?



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Weather can effect your meter .Those meters are not very accurate just a base line get a good swr meter and then check it.If your getting good radio checks it could be the potentoimeter is dirty . Radio shack sells contact cleaner and lube try cleaning it . That might help

Posted on Jan 10, 2008

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Putting your SRF/SWR/CAL switch to the cal setting allows you to move the swr cal knob to set the radio's meter to reflect what the actual swr reading is (when taken with an inline meter).


Posted on Jan 25, 2008


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1 Answer

How to set duel wilson 2000 swr

with wilson antennas you don't have to need to run duals the proper way to adjust the SWR is to get an external meter like a trucker 2000 and a dummy load. you hook the dummy load to one antenna while working with the other and then switch the operation around. this way both antennas are matched seperatly yet work together.

Oct 27, 2013 | Cobra 29 LTD CB Radio

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Red lights come on tx n rx and antenna come on when I key up the cb radio and the swr meter doesn't move

if a mod has been done to the cobra 29 (all 29,s)the light will come on just find vr6 audio the radio as it comes on adjust vr6 untill it goes away,,,,always trust your watt meter(s.w.r scale)over the flashing light its really easy to do it beats paying a shop $10-$15

Jan 13, 2013 | Cobra 29 LTD CB Radio

1 Answer

Swr meter not moving

follow these steps to adjust the
standing wave ratio(SWR).
1. Turn on the CB.
2. Set S/RF/SWR/CAL to CAL.
3. Key the Mic and rotate SWR CAL so the meter points
to CAL.
4. Unkey Mic.
5. Set S/RF/SWR/CAL to SWR.
6. Key Mic again and note the actual measurement on
the SWR scale. Refer to the following table to interpret
the reading.

1:1 - 1.5 Great
1.5 - 2:1 OK
2:1 - 3:1 Not So Good
Higher than 3.1:1 Terrible

Jan 14, 2011 | Cobra 29 LTD CB Radio

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I just took my cobra 29 outta my big truck to put in my pickup. when it was in my truck it worked great i installed a 5 1/2 ft wilson trucker antenna on pickup it has a good ground i ran new rg58au coax....

You seem to have a short or an open circuit . Could be a PL259 connector problem, the ant. is defective and can possibly be a bad ground. Try to add an extra GND. from the ant. base to a central GND. point...This will include the power neg. lead from the radio.
PLS E. Note: If the O/P POwer shown when you key up to check SWR is higher than usual this
will indicate a definate ant. problem................GOOD LUCK and have fun learn'n ! ! !

Dec 07, 2010 | Cobra 29 LTD CB Radio

1 Answer

My radio is about 4 years old. A year ago I had it sent it to get worked on and everything was fine with it when it was sent it. I got a mini wil magnetic antenna mount and it worked great for about 9...

The little wil is not a terrific antenna. I have one and I can't get it less then 1.7 no matter what I do, and I have an antenna analyzer that lets me see real time what it's tuned at while adjusting the antenna. I tried it on another vehicle and I couldn't get it under 2 swr no matter how I adjusted the antenna.

A barefoot radio should be fine with an SWR of 2 or less, however I do not like to run any radio above 1.5 SWR, and I like to get it even lower then that.

I recommend stepping up to a wilson 1000. I have been able to get every wilson 1000 I have ever tuned down to at least a 1.1 SWR. A true 1.1. You cannot get a true SWR from the meter in the radio, you need an analyzer. So if you can get it too a 1.1 on an analyzer then you have a really excellent match.

Little wil is an inexpensive antenna made for some one who is not a serious CB'r. It for the guy/gal who wants a radio for emergency. If you are planning to talk a lot on the radio, go up to at least a wilson 1000.

Oct 23, 2010 | Cobra 29 WX NW ST 40-Channels Base CB...

1 Answer

I have acobra classic 29ltd key mike ant lights up replaced stud

First thing, you need to check your SWR, you must have a SWR meter to do this. If you are a trucker, you can get it checked at any CB shack, radio shack, etc, they will check it for free. Next, make sure the antenna driven element is clear of any metal blockage, and that it is getting a good ground at the base, don't know what kind of antenna you using, but the Wilson 1000 is a good one to use, install in midle of cab.........hope this was helpful.....

May 28, 2010 | Cobra 29 LTD CB Radio

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Always use an external meter to set SWR. If the ant. warning light comes on it indicates a problem with the SWR. Check it with external meter.

Oct 19, 2009 | Cobra 29 LTD CB Radio

1 Answer

Swr co phase issue

When two antennae are cophased the harness should be made from 75ohm cable and then connected at the "T" then 50ohm to the radio. The spacing between the antennae is critical to the pattern of radiation and resistance of the system. If they are not the proper space apart for the length of the harness, you will not be able to tune them.

Oct 05, 2009 | Cobra 29 LTD CB Radio

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When i key up the mike the tx/rx light and the ant

your swr setting are off wack fix your swr

Oct 02, 2009 | Cobra 29 LTD CB Radio

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I believe it to be feedback but be aware of your Standing wave ratio because using a linear amp radiates signal to the point that it could cause that light to come on. There is a problem if the radiated signal is feeding back into the amp a a higher level that it can withstand over time.

Sep 08, 2007 | Cobra 29 LTD CB Radio

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