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S-120 Drone/Hum Revisited


 
Edited

After running out of things to do I decided to put the S-120 under the 'scope to try to find out where the noise is coming from.? I think I have at least the symptom of something identified.? The first scope trace attached to this post is From T6 Pin 1, with BFO fully CW.? It appears to have a 60 Hz component but not sure, so far, where it is coming from.

73,
--
Justin B.
KI5GKD

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