Re: installed QMX Rev 2 diode mod, now it is deaf
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Check L503 for continuity. It may have been damaged.
JZ KJ4A
On Tue, Jan 16, 2024 at 3:46?PM k9pz < kd9okx@...> wrote: I installed the diode and two days later started experiencing the audio issues others have been reporting.
The audio sweeps on 20m and 30m are erratic and 70db down. The sweeps on 80, 60, and 40m retain the correct shape but are about 50db down.
Power out is unstable on 20m via diagnostics, fluctuates between 3.5 and 4.5w.
I uninstalled the diode and nothing changed.
If i touch the windings on L401 audio improves on 40m.
I really screwed it up good this time!
Any tips would be greatly appreciated, i will see what else i can dig up.
Thanks
73 Brandon K9PZ
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