Never look a gift horse in the mouth, but it didn't come
with a manual, so...

With the Wadley loop providing 30 1 MHz bands without
switching, and with the 2nd IF being a constant component
of all the bands, how come the FRG7 is deaf below 500kHz
(no reception of Radio 4 on 198 kHz)?

Is it a limitation of the preselector?

"Gareth's Downstairs Computer"
wrote in message
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Never look a gift horse in the mouth, but it didn't come
with a manual, so...

With the Wadley loop providing 30 1 MHz bands without
switching, and with the 2nd IF being a constant component
of all the bands, how come the FRG7 is deaf below 500kHz
(no reception of Radio 4 on 198 kHz)?

Is it a limitation of the preselector?



just is

Yes, the input circuitry, before the RF amp. If you look at the schematic, trace the MW (BC) input to the 1st transistor. If you substituted a low pass filter, inputting to the 1st amp, you might get your LW station.