VFO Amplifier to Crystal Filter IR Path



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The black tube included with the kit is used here.

Only a black tube will block all visible light so that it does not effect the phototransistor.

See "Preparing the Heat Shrink Tubing" for information on using the black heat shrink tubing supplied with the kit.

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Last Update: 7/9/06
Web Author: David White, WN5Y