Parallel-tuned Compact Loudspeaker Crystal Radio

Here are the schematics of two parallel-tuned versions of my 'Compact Loudspeaker Crystal Radio'.

Parallel - tuned Compact Loudspeaker
Crystal Radio - Schematic 1

Parallel - tuned Compact Loudspeaker
Crystal Radio - Schematic 2

The local 200 kW, 612 kHz AM broadcast station, just 20 km away, is heard quite well with either version on my 'Homebrew Horn Speaker'.

Related post: A Chance Crystal Radio Project
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