Put an antenna coil on the variable cap. The tuning knob (red screw) adjust from about 7 - 10 Mhz. When I put the amp and antenna on I got radio China and a couple of the usual stations in that range. I will make another amp for radio listening. The hearing aid amp works but I think it was desinged more for fidellity than gain. I could put a preamp on it but the little box is crowded with three transformers in it and it works well for what it is.
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