Posted on Jan 2, 2013

This circuit is configured for the 80m band. The 365-pF, broadcast-band variable capacitor should have a vernier drive with a six-to-one ratio, which makes tuning easier by separating the stations on the dial. A good antenna and ground are also recommended.

Click here to download the full size of the above Circuit.

The Radio Shack iron-core chokes (276-101), used in the bfo part of the circuit, can be calibrated by listening for the lifo signal in a calibrated receiver.

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