Explanation of why HF Amplifiers need a PTT keying cable from the transceiver. Modern amp relays operate at low voltage so a simple keying cable is typically used. Interface or buffer relays are usually only needed for old amps with high voltage keying relays. | DX Engineering
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Explanation of why HF Amplifiers need a PTT keying cable from the transceiver. Modern amp relays operate at low voltage so a simple keying cable is typically used. Interface or buffer relays are usually only needed for old amps with high voltage keying relays. | DX Engineering
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