03-10-2023, 04:24 AM
Michael, it is very easy to see that your assumptions are correct. Conduct a small experiment - connect to the anode of the first detector an IF signal modulated by a LF signal of 1 kHz from the generator signal, and put a jumper instead of L11. In the presence of high-frequency noise (and whistling) when using a jumper instead of L11, your version will be confirmed for sure.
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Sincerely Peter
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