bob's data: Bob's useful electronic data & project plans
Projects & Information:

High Selectivity Crystal Radio
with Short Wave

High Sensitivity BFO
Metal Detector

Two Tube Portable Multi Band
Regenerative Receiver


Battery Life Chart

Parabolic Microphone

Very High Gain Audio Amplifier

Audio Sine Wave
Generator

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Home | High Selectivity Crystal Radio with Short Wave | High Sensitivity BFO Metal Detector | Two Tube Portable Multi Band Regenerative Receiver
Battery Life Chart | Parabolic Microphone | Very High Gain Audio Amplifier | Audio Sine Wave Generator