Evan, I get what you are going for— that it might be coupling between the loops, however take a look at this post
Where I used to very short jumper across first the input and then the output diodes individually I have the highest low pass filter, with all of the other still connected which is very similar to what you were asking for,…., and it made single-digit changes with still very high harmonics.
I think that suggests that it really does have something to do with all the other systems being connected, possibly their diodes
An easier change that I can do is to simply remove the tack solder point on the output diode (leaving all of the loops of wire still physically present ) and check again to see what spectrum look like. I bet even with the wires still in place but ***no longer soldered ?to the output diodes are the other filters***, it will be again far cleaner
I’ll try to get that done early tomorrow.
Thanks for your review! ?We are closing in on it
73?
Gordon
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On Nov 9, 2023, at 21:52, Evan Hand <elhandjr@...> wrote:
?Gordon,
Can you remove the long jumper runs for this last test and just jump across D15 and D19?? This would be to eliminate any bypassing of the filters through the jumpers.
73
Evan
AC9TU
