Simple LF converter
This converter allows coverage from 25 kHz up to 500 kHz. Use short coax from the converter to receiver antenna input
Tune the receiver to 3 MHz, peak for loudest crystal calibrator and tune your receiver higher in frequency to 3 MHz and you"re tuning the 100 kHz range. 3 MHz puts you at 200 kHz, 3 MHz equals 300 kHz, 3 MHz yields 500 kHz, and 4 MHz gives you 500 kHz.
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