Top 20 Cobra 29 LTD CB Radio - Page 3 Questions & Answers

First lets see why the channel display is not lighting up. This indicates a problem internally with the radio. Is the CB/PA switch in the CB position? If the CB/PA switch is in the CB position and the display is still not lighting up then you more than likely have a problem with a voltage regulator. If the regulator shorts or opens then the meter lights will come on but the VCO / PLL circuit will be dead thus No receive or transmit.

Cobra 29 LTD CB... | 118 views | 1 helpful votes

you have high SWR on antenna .get the ant. tuned or go to a cb shop and have it tuned .i'm hoping it is on a vehicle .if its a base ant. you need to tune it.

Cobra 29 LTD CB... | 123 views | 0 helpful votes

antenna not matched SWR to high

Cobra 29 LTD CB... | 38 views | 0 helpful votes

this is a questionable thing. The radio I am using doesn't have a meter light but the meter works.I don't pay much attention to the meter anyway as I have a Dosy hooked up to it at all times. It will not affect the radio out put or input so you may think of getting a small meter to put in line and leave it at that.

Cobra 29 LTD CB... | 92 views | 0 helpful votes

they all the manuf date on them.

Cobra 29 LTD CB... | 81 views | 0 helpful votes

did you install it correctly? the base ,emitter and collector may not be in the same order on the erf210 as it was on the one being replaced.check it out I'll bet they are reversed.

Cobra 29 LTD CB... | 71 views | 0 helpful votes

it probably jumped freq. somehow. There is now manual or anything but a picture of this radio and a few tune up rv's but thats it.I have the exact same radio and it works fine If you can put it on an oscilloscope it should tell you right away what the problem is. Then try a frequency counter.

Cobra 29 LTD CB... | 84 views | 0 helpful votes

is it used? if so it may have been hacked for more channels and no one finished the work.If its new send it back to cobra .its under warrenty

Cobra 29 LTD CB... | 135 views | 0 helpful votes

the components in this radio will not let you turn it up more than 4 watts nor will it allow you to turn the modulation to more than 90% the best thing to do if you want more power is to run a small heater and be happy.

Cobra 29 LTD CB... | 242 views | 0 helpful votes

get it away from the ext . speaker. They are cheap enough ,buy another one and see if it still squeals. If it does then you may have to jump the mic with resistors ,turn down your mic gain, check for talk back on rear where your pa. and external speaker hooks to inside the radio. If you see a resister connecting them then you have talk back . Mainly its a Keep the mic away from the speaker deal that makes them squeal. Try other cobra mics with the same pin out and see if it still happens . easy fix just have to be patient .

Cobra 29 LTD CB... | 121 views | 0 helpful votes

I've seen people fry the final transistor stage in their radios when they've "tuned" the connex board. I'm betting that's what happened here. Have a tech check that our for you if you don't know how to find/test the finals. Good luck

Cobra 29 LTD CB... | 60 views | 1 helpful votes

turn up your RF gain all the way to the right and your micd gain to the right also

Cobra 29 LTD CB... | 71 views | 0 helpful votes

make sure you have no noise in the background at all the be my guest. you may have to put a cloth over the mic speaker to keep the noise level down but you can do it.

Cobra 29 LTD CB... | 120 views | 0 helpful votes

there are many tuning pods ,which one do you need? modulation is vr-4

Cobra 29 LTD CB... | 244 views | 0 helpful votes

good luck

Cobra 29 LTD CB... | 191 views | 0 helpful votes has your manual.

Cobra 29 LTD CB... | 132 views | 0 helpful votes

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