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2014-11-06 06:18  
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TV4.5 MHz sound channel with 1 -wattAF output using an ECG1051 chipand an ECG171 bipolartransistor. Typical supply voltage for the chip is 10 g volts, while the output transistor can be operated from a 120-volt DC supply. Audio output from the chip is 3 volts RMS. The IF transfomen radio detector transformer and audio output transfomer are all standard and can be purchased at Radio Shack(courtesy GTE Sylvania Incorporated).