I asked about the pulse signal in the pix he sent. I think those
might be calibration signals from the scope and not anything produced by
the receiver. Are these what you mean? There is a sine wave with
something low level riding on it in the pix. Need to know what I am
looking at, only the OP can answer that.
toggle quoted message
Show quoted text
On 11/22/2023 5:00 PM, don Root wrote:
I am lost as to what has been done and or checked
It appears to have a steady HF signal ?riding on? a very strange,
largely pulsed? 60hz? , no idea what t6 is but? perhaps? he means the
bfo?? in which case the HF part is expected.? I wonder if that 60Hz
waveform is coming from? ¡°anywhere¡± , but my guess is that the pulse
generation is close by? because the rise times look very short
No idea ?what happens with no bfo or a bit of bfo
If this was some strange signal from outside we would expect other
receivers to so have some similar noise
Best guess is that 60 hz is ¡°leaking¡± into the bfo? and triggering
??that pulse somehow??? ?a cap or tube are the first likely things ¡
but it is a strange waveform
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
