Re: RFI from uBitx TX after AGC and other mods installed

Don, ND6T

Check to see if the ground at the center of your new receive RF point is good when the board is unplugged. If it is, then unplug the AGC board and jumper the two outer pins of that RF tap. It sounds like it might not be grounded well. Of course it could be many more things but that is a start. Try to disconnect or bypass one thing at a time to isolate the cause. Since you are hearing what sounds like SSB then I doubt that the problem is improper gating of the audio. Unless you are using an amplified microphone and you are just hearing peaks that are over-powering it. In which case, unplug the PA power and see if it went away. Are you transmitting into a dummy load or into a radiating antenna? The more information, the better. Please keep us posted. 73, Don

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