Question about Radio Communications
Try turning up VR-501. which ever way it is turned now turn it the other way to max and see if that works.If not turn it to max the other way.
Posted on Nov 04, 2013
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Posted on Jan 02, 2017
SOURCE: talkback on a cobra 200 gtl dx
This procedure is not as simple as just cutting a wire. Note that you can possibly mess your radio up if any maintenace is not done properly. I do suggest taking your radio to a proffesional to have the talkback removed, but, if you really want to do it yourself, go to ghe following link and basically reverse what has been done.
This is the service bulletin for the addition of talkback to the Cobra 150GTL DX and the Cobra 200GTL DX.
As long as the talkback was added correctly, this can be put back origional.
If this does or does not help, please reply on here or email me at email@example.com. I look forward to hearing from you.
Mt. Vernon, TX
Posted on Feb 14, 2008
Open the case on your radio. Solder a 100 ohm resistor between the pa jack and ext speaker jack. You can add a switch if you like to turn it on and off. The lower the resistance, the louder the talkback.
Posted on Apr 25, 2009
1 why would you change the finals?? Have you checked you antenna? How are your SWR's? Crappy antenna's cause a lot of problems.
Use an external meter to see what the SWR is, and see what the output is PEP. If its low, then there is something wrong. If it is High, change the mic and turn up the dynamic all the way.
Next. Have you been messing around in there?? Tryin to get more wattage? You turned VR4? If you thought you were turning it up by turning it all the way to the right, you turned it all the way down. Turn it all the way to the left.
Posted on Jun 17, 2009
There should have been instructions that came with your reverb board. You are going to need to drill another hole in the case of the radio, or find a control where you can install a dual control knob onto.
Your reverb board is likely going to need 8v, so you will need to locate that off the logic board, likely from the frequency synthesizer. The the audio lines from the mic, or the output of mic amp, are going to be redirected to the reverb, and the output of the reverb feed back to where the wires were removed from.
If I recall correctly, the 148 is a bit of a bear to work with, not much room inside. You will likely have to get creative in placement of the reverb board itself. Make sure to wrap well so that it doesn't get tossed around and break something inside.
Posted on Sep 15, 2009
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