Question about Cobra 19 DX IV CB Radio

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Need to know where modulation diode is so i can replace

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Dm1 next to transformerneed to know where modulation diode is so i can - 9da19ae.jpg

Posted on Jul 28, 2009

  • Ed Paparo Jul 28, 2009

    the one with the leg up!



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  • To boost modulation you need to add another diode in series to the diode located next to C92, it will reduce the power a little bit but it does help give the radio more modulation.
  • The AMC itself is the middle pot under the wires towards the front.
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You should not cut the modulation diode, you should adjust the potentiometer VR-4 for full modulation. By cutting the diode, you risk over modulating. By turning up the pot, you can correct for an over modulation.

If you are still insistent on cutting the modulation limiter, it is D11, located directly in front of VR4 and C73. Looking at the radio from the front to back, it is in the right corner, apx 2 1/4" from the back and 2 3/8" from the right side.

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