Tim The issue with the relay at the antenna is the time to close the contacts and avoid RF hot switch. I'm using a Jennings RJ1A-26S for years, just 4-6 milliseconds to close. Or you can use a sequencer, or a winkey2 with cw lead time and PTT2 for the amplifier.
http://www.mgs4u.com/RF-Microwave/vacuum-relays-SPDT.htm Regards Carlos N4IS _________________ Topband Reflector
