Can the IC-761 PTT be keyed through radio control? I've read where some Icom radios cannot be keyed through radio control, but trying to assist someone with an IC-761 and WL. He's not able to key PTT through radio control. Will he need an external PTT interface? Or should PTT work through radio control? Thanks, Don AA5AU http://www.aa5au.com http://www.rttycontesting.com