In radio & TV broadcasting we used "Dry" contacts for microphone switching. Both relays and switches. The contacts actually wiped a tiny amount as they made or broke. Usually the contacts were actually gold plated stiff wires that were mounted at a right angle. 73 George AI4VZ
A DC wetting current has been common in relay circuits that would > otherwise just be switching low level alternating current signals. I > recall seeing it applied to RX front end filter switching relays. > > Regards, > > Mike VP8NO (G3VUI) > > ______________________________________________________________ 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
