This is a circuit for a VHF receiver that can be adjusted to decode SSB, CW and NBFM in addition to AM.
See https://www.arrl.org/files/file/Technology/tis/info/pdf/9712039.pdf .
Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.
This is a circuit for a VHF receiver that can be adjusted to decode SSB, CW and NBFM in addition to AM.
See https://www.arrl.org/files/file/Technology/tis/info/pdf/9712039.pdf .
I have to confess I have no idea where these are and the callsign does not help. In a short while I shall look them up. This is a QSL card....
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