Transmitters
1.5V Battery operated FM rebroadcast transmitter
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AC mains powered FM transmitter with pre-emphasis, audio level control, and tuning control
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A One Transistor FM Radio
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2 Transistor FM Transmitter
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4 Transistor Transmitter
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FM Transmitter with Opamp
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FM Stereo Transmitter (BA1404)
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Long range FM transmitter
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FM Transmitter (Colpitts Oscillator)
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FM Transmitter (hartley oscillator)
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Powerful AM transmitter
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AM transmitter
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Surveillance Transmitter Detector
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VHF band TV transmitter
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Receivers
The Modern Armstrong Regenerative Receiver
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SW Regenereative Receiver
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Bipolar Regenerative Receiver
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Band 2 Preamplifier
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ZN414 Portable Receiver
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SW Receiver Using ZN414
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R5000 Receiver Computer Interface
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AM Receiver (three transistor, regenerative receiver)
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40 meter Direct Conversion AM / SSB Receiver
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AM Receiver in two parts
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FM receivers basics
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A high-performance FM receiver for audio and digital applicatons
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Short Wave Receiver
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Antennas
Antenna Tuning Unit
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Medium Wave Active Antenna
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The ATL-3 Loop Antenna
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Q- Multiplying Loop Antenna
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Miscellany
Test a LF quartz crystal
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Automatic Repeater
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UHF TV Preamplifier
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