[Milsurplus] FW: Command Sets selectivity video ?

[Hubert Miller]

Addendum to that:  lacking a link to such video ( which may have been taken down ), does anyone know who MIKROWAVE1 is, so I
could ask him?
What I was specifically wondering about, using a crystal in a very simple crystal filter at HF, circa 2.5 MHz, did he use a balanced,
phasing-capacitor circuit, or just stick the crystal in series between tuned circuit and grid resistor ( as has been done in some
magazine project circuits ) ?
-H

>A while back, like 3 years, I watched some YouTube video on selectivity experiments with Command Sets receivers,
which compared Q multiplier, crystal filter, and so on. I cannot seem to find it now. Anyone give me a pointer on
who the author was, or a better term to search on, or any good clue?
tnx
Hue
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