Bill, The proper wiring diagrams are in KAT500 (p. 5) manual, available for download from Elecraft's web site.
KAT500 - http://www.elecraft.com/manual/E740183%20KAT500%20Owner's%20Manual-%20Rev%20 C.pdf Hope this helps, and gud luck. 73, --Ian Ian Kahn, KM4IK Roswell, GA EM74ua km4ik....@gmail.com K3 #281, P3 #688, KPA500 #1468 HRD v5.x/6.0 Test Team -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill OMara Sent: Saturday, August 24, 2013 4:20 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Need K3,KPA550 & KAT500 cabling diagram Can someone point me to the location or send me a cabling diagram for connection all three devices. I need to make sure I have or order all of the required cables and "Y's" to have full operability of the system. Thanks and 73 Bill W4RM ______________________________________________________________ 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 ______________________________________________________________ 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