Relays


The relays are used to select one of the crystal filters. The easiest to use would be SPDT relays, but two SPST relays might provide better isolation between the filters.

A second filter could be switched into a one filter strip, which would simplify the circuit a lot. This layout was just the way it happened when I built the receiver, but it could be simplied.

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Last Update: 12-20-2002
Web Author: David White, WN5Y