A few weeks back I wrote that I was experiencing a most unusual noise problem. I had hoped that someone else might have had the same problem and would have the answer. This didn't happen. The noise was noticeable when the volume control and RF Gain were at minimum and even the antenna disconnected. I want to thank Gary, KI4GGX, who was of great encouragement to me is the solving of this problem. He even suggested I record the noise. I did and sent it to him to hear. I finally decided to use the bruit force approach and used a 1000 UF capacitor with one side grounded. Starting at U9 the audio amp, shorting leads to ground through the capacitor, I discovered the noise was coming in via the CW side tone path. I traced the noise to the input to U 10B pin 5. Under a high intensity light and a magnifying glass, all solder pads looked clean and shiny. Not knowing where else to go, I resoldered all the pins of U10 plus C36. I suspect C36 may have been my problem but all that noise has now gone away. Don Webb...KA7L
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