A Positive Voltage Transmitter Keying Circuit Different transmitters have different PTT (push-to-talk) circuits. We’ll call it a sink-type PTT if grounding the PTT line causes the transmitter to key and removing the gr

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Date: 2002-12-23 09:59:12		A Positive Voltage Transmitter Keying Circuit Different transmitters have different PTT (push-to-talk) circuits. We’ll call it a sink-type PTT if grounding the PTT line causes the transmitter to key and removing the gr Add to Reading List Source URL: www.scomcontrollers.com Download Document from Source Website File Size: 10,91 KB Share Document on Facebook