Amplifier keying relay buffer interface 3 x Inputs, closed contact and 12v OUT

  

Why do you need this? When connecting devices to your radio for TX keying you DO NOT want excessive CURRENT or HIGH VOLTAGES (Often a problem with old linear amplifiers) finding there way back into your radio. On triggering, provides active 12v and closed contact connection on rear. Two input stages drive a solid state opto coupler via a closed circuit contact closure from your radio.

The advantage of solid state is much reduced current draw through the radio. All outputs, closed contact and 12v are individually fused for maximum radio protection. PLEASE NOTE THIS UNIT DOES NOT SWITCH THE RF PATH, ONLY SEND TX KEYING VIA CLOSED CONTACT.