Question about Cobra 200 GTL DX 4-Channels Base CB Radio

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I have a cobra 200 gtl dx and some one make modification on it to get more power and more modulation but i see in my books the modification to raise up on the board in front of my cb tell me to raise up one ressistance just in one side left side but when i go to raise the ressitance i see is missing 2 ressistance the guys you did that i dont know im because i buy it like that the probleme is i d'ont know the #number of this 2 ressitance because i whant to put it back in the redio and do it like the book tell me to do it the right way but i dont have the ressitance number could you help me with that please because my modulation on my cb is not good i think is the 2 missing ressitanse do that please help me Bert thanks in advance

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You do not do it by resistance. To turn up the radio it is a variable resistor. What you do is connect a watt meter that can read PEAK or PEP watts AND AVERAGE or dead key watts.

First you check it on avg watts. Hook the radio up in line with the watt meter and set it on avg watts. key the radio. Stock is 4 watts. A lot of times when you peak a radio, you lower the dead key.(thats keying with no audio.) This allows you to get more modulation wattage, or swing wattage. If that has been done it will probably do 2 or 3 watts. If it has had the AM power raised in it, it could be more, this is no good. You want your dead key a bit lower.

Now check it on peak. Flip the meter to peak and make an AHHHHHHHHHHHHHHH noise into the radio. It should swing to anywhere between 15 and 20 watts.

You adjust the AMC while giving it audio and watching the meter on peak to adjust the modulation. 4 watts is legal modulation.

Posted on Feb 22, 2010

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