Question about Cobra 29 LTD CB Radio
I toke the back off cb to replace diode 1n4001 can not find it
Posted by Anonymous on
If you are talking about the reverse polarity diode its there , right by the power wires that come into the radio. way in the back on the R.H. side.
Posted on Nov 25, 2014
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Posted on Jan 02, 2017
For the operation manual, go to cobraelec.com or:
Posted on May 10, 2008
SOURCE: New radio
Assuming no hardware faults, start with the basics, on powering on the radio:
1. RG Gain max clockwise;
2. Ch 9/NOR to Normal;
3. Delta Tune to mid position;
4. CB/PA to CB;
5. Squelch to minimum counter clockwise;
6. Channel selector to desired channel.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
Thank you for using FixYa.
Posted on Jun 30, 2008
YOU CAN ORDER THAT PART FROM COBRA ELECTRONICS ON THE INTERNET YOU HAVE TO REMOVE THE FACEPLATE AND UN HOOK THE DRIVET INSIDE THE RADIO IT LOOKS LIKE A SMALL RIBBON CABLE THAT GOES TO THE FACEPLATE. SOME TIMES THE DRIVER ITSELF IS THE PROBLEM. MANY SHOPS JUST DO NOT WANT TO FIX THEM BUT I DO.
Posted on Mar 13, 2009
SOURCE: Cobra 29 Ltd Classic
In most cases just turning up VR4 is more then enough. Replacing the final, tr14 with another transistor requires changing many more parts to get it to work.
With a new 29, there is no need to change the final. Just turn vr4 all the way up and you will see around 20 - 25 watts. L13 won't gain you a single watt. L12 will raise the dead key, and usually you want a lower dead key for good swing. L14 will gain you a few watts, but don't adjust this unless you have a watt meter. You turn it out to increase wattage, but too much will over bias the final and shorten its life.
You hook it to a watt meter with a dummy load. Then say a steady AHHHH into the mic while keyed. Turn the slug out until the needle stops going up, then back it down to where it stopped.
The easy thing to do, and you will be pleased is just to turn VR4 up. Now, Up is counter clockwise. Its a variable resistor, so the less resistance, the more modulation. So you want to turn the VR down.
that will be more then enough.
Posted on Apr 25, 2009
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