ATV Downconverter

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This RF converter converts amateur TV signals in the 420- to 450-MHz region to VHF channel 3 or 4, allowing reception of those signals on a standard TV receiver. RF amplifier Q1 feeds mixer M1, and Q3 acts as an IF amplifier. Q2 is an oscillator operation around 378 MHz and is tunable over about a 30-MHz range.

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ATV Downconverter - Circuitos de Electronica

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