I received a this radio recently and ran it hot in a box with no muffin fans on the heat sink. intellegent. the radio turns on and is able to receive still. the needle moves in receive mode but not in transmit. did i burn out the duel 2sc2290's or could it be something like a drive or worse??????
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Re: connex 4600 turbo
It is lkikely that you burn the output transistors. You can easily check these transistors even if it is soldered but be aware of low resistance paths like coil , toroid, and lo ohm resistor which might affect the reading in the multitester.
To be sure desolder at least 2 pins before testing.
I do not think that the driver is damaged.
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I have CX-4600-T too. Mine gets way hot as well, I had a mod kit installed n it swings 215W peak power now. But the excessive heat is annoying, I think mine does have a fan in it though cause I know I felt air coming out the back before.
The Connex 4600 Turbo is a very sensitive radio these radios don't work good at all with the stock microphone! The best microphones are the RK-56 and or the Astatic 636L which most people use and you shouldn't get any squeal. And make sure if that you are using an external speaker get it as far away from the radio as you can facing away from the radio so it wont feedback. As far as a Mod kit there are several ways to modify the radio which most are pretty hard and drawn out. but the most easy that used to be used is as simple as a diode placement in the right place which is old school but still works good. You must be very careful as if you are to slightly touch the wrong points the radio could be destroyed and no longer work so caution is to be taken if you don't know what you are doing please don't try it on an expensive radio!! If you want more info on the mod e-mail me
never the less a Modulation kit or modification wont help your Receive it will only help your Transmit signal!!
THE TALK BACK VOLUME IS CONTROLLED BY THE MIC GAIN, TRY ADJUSTING YOUR TALK BACK VOLUME ABOUT TURNING THE MIC GAIN FROM 12 OCLOCK TO 6 OCLOCK, DO NOT WORRY YOU WILL NOT LOSE ANY OUT BOUND POWER UNLESS YOU TURN THE MIC GAIN BELOW 11 OCLOCK