Question about Cobra 29 LTD CB Radio

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Worked just fine in My big truck, but I upgraded to a BIGGER Radio and have installed my Cobra 29 LTD in my wifes truck. Used a mount and screwed it to the bed of the truck. Has 18' Coax, new mic., 3 ft firestick. Gets power just fine. As a test for distance... she drove approx 1/2 a mile away and I could hear her, but she could not hear me...in fact I heard her for over 3 miles. So I know she is getting out, but what is preventing her from hearing?

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Is she getting bad motor noise? Make sure the ANL is on. Is the antenna tuned for best SWR? if the antenna is not tuned it can effect the receive.

Posted on Oct 07, 2010

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1 Answer

I just purchased a cobra 29 LTD Classic mobile CB radio.Pro tuned high performance Mosfet Final I have a palomar 450 LD mosfet linear.will i have any problems?


Not if the power output from radio to amp is set correct and the jumper for coax is correct length and there is absolute perfect match between them and the antenna used. Afterthought: also the amp better be connected to something big enough to power it.

Apr 29, 2012 | Cobra 29 LTD CB Radio

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I dont think my talkback works on my cobra 29 ltd chrome. am i doing something wrong?


was it already installed or did you set it up ? If its a talk back that is an s.m.d. then it is usually controlled by the rf gain and the delta tune .Some will mount it to be controlled by the mic gain.Others try it out by attaching a resistor to the PA and external speaker plugs on the back of the radio. you may have to use a bigger resistor or even a smaller resistor to get it to work the way you want it to .

Apr 21, 2012 | Cobra 29 LTD CB Radio

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I have a 2006 china made cobra 29 nw ltd classic and the T1 transformer is getting hot to the point it starts to melt and all i did was change the final to a irf510 and solder bigger power wires to the...


You need 60/40 for the solder. others would work but they are higher temps and you would need a larger soldering iron. you may have a solder bridge somewheres causing a short to the t1.. or the mosfet is not installed correctly.

Jan 22, 2011 | Cobra 29 LTD CB Radio

1 Answer

Radio cuts out occassionally...no transmit,no receive.if i tap bottom of it,it comes back for awhile.it's a cobra 29 ltd classic,has bigger finals and connex board installed.


Hi, my name is John. Welcome to FixYa. Take the cover off circuit board side, and with the eraser end of a pencil, touch around on the board trying to locate cold solder joints, have to look real closely and re-solder them....Thanks for choosing FixYa...John

Nov 21, 2010 | Cobra 29 LTD CB Radio

1 Answer

Cobra 29 LTD Bluetooth


You got your radio peaked? Most likely, however, the pot for the antenna warning indicator is VR6. I always check that after peaking a radio.

Jul 28, 2009 | Cobra 29 LTD CB Radio

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I have a Cobra 29 LTD with Bluetooth. I have no static no matter where I set my squelch and RF gain unless my noise blocker is off. Both my rx/tx and antenna lights turn red when mic is keyed. I have try...


if the antenna warning indicator is lighting during transmission then the antenna is either located and.or installed improperly or a defect exists in the antenna mount or the feedline itself, including connectors.

Jun 08, 2009 | Cobra 29 LTD CB Radio

2 Answers

Cobra 29 ltd classic ant light


Your SWR is probably NOT fine. You need to use an external meter if you have had work done to the radio. Especially if you have had a swing mod done to the radio. When you do this, the dead key of the radio is lower then the calibration knob on the radio can adjust for. It will always come up lower then it actually is.

Your radio might have been fine before the work was done on it because it was putting out very little power. Now you are most likely putting out 50 watts or more. Big jump from 4 watts.

When your raise the power in a radio, you will notice more when the antenna is not properly tuned.

In most cases with a stock CB, even when the antenna is not even near tuned, you will get a reading less then 1.5 anyway.

the more power you put out, the more important it is to have a good match.

But an external SWR meter, and check it. be careful if the ANT light is on.

You might also want to check your coax, connections to it, and your antenna for anything wrong.

Apr 22, 2009 | Cobra 29 LTD CB Radio

1 Answer

Cobra 29 LTD Classic not transmitting or receiving


ant. light should only come on if you have a high vswr a bad thing did you check that cb/pa switch is set to cb check your swr this is not a good place to mount ant. as it is close to metal of back of cab

Dec 20, 2008 | Cobra 29 LTD CB Radio

1 Answer

Cobra 29 LTD Classic not transmitting or receiving


As I understand from a tech friend of mine, most truck beds are not grounded well enough. Perhaps you could borrow/purchase a magnet mount antenna and locate it on the roof, for testing. Then you would have it narrowed down to the location.

Dec 05, 2008 | Cobra 29 LTD CB Radio

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