Pin diode rf switches are preferred today. You can even get the QSK-5 kit from Ameritron if you can't make your own. Good to 2500 watts and infinite speed.
Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com email: b...@wjschmidt.com > On Feb 27, 2017, at 10:28 PM, Jim Brown <j...@audiosystemsgroup.com> wrote: > >> On Sun,2/26/2017 3:04 PM, Guy Olinger K2AV wrote: >> But even though the K3 is cycling TX/RX very fast the 8410 is not banging >> the vacuum relay to death trying to follow 30 wpm dits. 30 wpm QSK*does* >> significantly shorten relay time to failure. Contesting, I've worn some out >> in less than a year. > > I own three very nice vintage Ten Tec amps that use vacuum relays. All of > them came to me used, and I've replaced those relays in each amp at least > once. After a few rounds of that, I stopped running QSK with those amps. :) > I'd like to hear from others having experience with vacuum relays and QSK at > contesting speeds. I mostly work between 28 and 32 WPM. The original > equipment relays were Jennings, and I've mostly used Gigavac as replacements. > I haven't had to replace one since giving up on QSK about 8 years ago, but I > really would like to run QSK. Have I made the right decision to avoid it when > running with a vacuum relay? > > 73, Jim K9YC > > > ______________________________________________________________ > 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 b...@wjschmidt.com ______________________________________________________________ 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
