AM_broadcast_tuner_with_two_IF_amplifiers

Published:2009/7/20 2:09:00 Author:Jessie | From:SeekIC

AM broadcast tuner with two IF amplifiers. Audio output with 400-hertz modulation at 30% is 80 mV. All coils, transformers and variable capacitors are standard.The tuning capacitor is a two-section type with the antenna section at 18 to 28 pF and trimmed and the oscillator section at 25 to 35 pF and trimmed. Pads can be purchased at Radio Shack (courtesy GTE Sylvania Incorporated).



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