Check the listing for details. Icom 761, 765, 781 Amplifier Relay Cable With Relay Buffer. Condition: New. Listed at 32.69 USD. Icom Amplifier relay cable that works with the IC-725, 726, 736, 738, 746, 756, 761, 765, 775DSP, 781, 820H, 821H, 910H, 7800 and probably some others I don't know about. The entire circuit is housed inside the 7 pin DIN plug and provides TOTAL isolation between your radio and amplifier's high voltage keying circuit. There is an actual miniature relay inside that will switch up to 200V @ 1.5A. The cable is 6' long, has 100% shielding and terminates into a standard male RCA plug. BUYERS please be advised that there are other sellers making Icom relay cables but their cables offer no internal relay for isolation between your rig and amplifier. If you try to directly key an older amplifier without a relay buffer you WILL burn up your rigs keying circuit. ALL of my ICOM cables contain a small DIP relay inside the DIN plug that will key either AC or DC voltages up to 2 amps at 200V. Folks, please be advised that we only ship twice a week, Tuesdays and Fridays. Just can't afford the gas to run to the post office every day! BUYERS BEWARE: Another seller has STOLEN and altered some of my original amp relay cable images & is using them as his own. You can tell they are altered as they are pixelated where he has cut and pasted different sections of them. He is a photo thief & phony and you will not get what he has pictured.Folks, please be advised that we ship on Tuesdays and Fridays with a cutoff time of 12 noon. Folks I feel it necessary to let you all new that doing business of any kind on "QTH.COM" is ill advised. I have just been ripped off for $85 on a WANTED TO BUY ad I posted. Your all better better off here in eBay because all buyers have a recourse!