Clint, I looked at that as a possibility, did a cursory look at an MFJ auto-tuner schematic, then decided that it was too easy to make one with spare parts and heat shrink. I would hate to spend $20 plus shipping - only to have to cut off the heat shrink on the MFJ cable, disassemble, do surgery to replace the Molex, and put on new heat shrink if I chose poorly.
Using the home brew cable, my 7300 and 7100 both work well with the KAT500 which I use with a KPA500. Next projects will be to make a patching switch to pop between the two for when I do simplex DV on HF. I have not tried to use my KX3 with the KPA/KAT500 combo, but assume it would be easy. KD4IZ Jack Spitznagel FM19oo -----Original Message----- From: Don Wilhelm <donw...@embarqmail.com> Sent: Friday, November 2, 2018 11:11 To: Clint Talmadge <clinttalma...@gmail.com>; elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT-500 interface cable question The wiring for the Icom AH4 Interface is detailed on page 8 of the KAT500 manual. Pin 4 of the Molex connector is connected to the shield (shell) of the T-R-S plug. I don't know how the MFJ cable is wired. BTW - there are no hyphens in Elecraft product designations, so it is the "KAT500" and not the "KAT-500". 73, Don W3FPR On 11/2/2018 10:45 AM, Clint Talmadge wrote: > New guy here with a question. I am about to get a KAT-500 to mate to > my IC-7300. In searching for the Molex connector I need to make an > interface cable for the radio to the tuner, I came across the > MFJ-5124I cable which MFJ sells to mate their 99* series auto-tuners > to Icom radios. The connectors on the tuner end are the same as used > on the KAT-500. The wiring is the same with one addition. Where there > is no ground connection from the sleeve of the 3.5MM stereo plug > specified in the KAT-500 manual, the MFJ cable has the sleeve connected to > the ground pin of the Icom connector. > Seeing the that the sleeve of the 3.5mm stereo connector on the > KAT-500 is chassis grounded anyway I think I can use the MFJ cable to > interface my > KAT-500 to my IC-7300. Does anyone see the flaw in my thinking? > (about the cable, not the radio) de W5CPT ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
