Welp, I guess I need to put my receiver back on the bench and take a butcher's...
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
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On Monday, December 30th, 2024 at 10:49 AM, Gary WB6OGD via groups.io <winbladgary@...> wrote:
> I have no idea what the added capacitor started the oscillator, but it has worked ever since.
?
Drake had an error for a short while (like one month) and fixed the schematic with a missing capacitor.
From message #65666
?
"C188 seems to be added to the same BFO circuit in the R-4B.
It decouples the exact node you propose to put a 1K to ground!!
Might be something Drake discovered in later models??
Also, schematic 919664054 seems to have a big error in the BFO, my downloaded from somewhere
copy has the correction marked in, that makes it like the R-4B schematic (the emitter connects to C163)."
Steve somehow found that a resistor (to lower the supply voltage?) fixed the problem, but the real fix is
probably a capacitor like you and Drake used.
73,
Gary
WB6OGD
