I had one once. It was a tremendous TVI generator…. K4TO > On Aug 15, 2017, at 4:07 PM, KENT TRIMBLE <k9...@socket.net> wrote: > > The Johnson 250-39 and B&W 380 T/R switches both had a certain amount of > "suck-out" but they did protect tube receivers. > > I had both (still do) and preferred the Johnson. > > http://wireless-girl.com/Projects/TRswitches/Johnson/ > > Note the warning about use with solid-state equipment, however. > > 73, > > Kent K9ZTV > > > > On 8/15/2017 11:58 AM, someone wrote: >> Just a note to say that years ago, I had a B&W Electronic Antenna Switch (I >> think it was called) that had one or two tubes in it. >> It worked perfectly to bias the receive completely and immediately as soon >> as transmit was detected. It allowed full break-in for CW work. I would >> like to see something like this again today in solid state. I think this >> would be the ticket for what you need. I haven’t looked, so I don’t know if >> anyone is marketing such a device. >> >> > > ______________________________________________________________ > 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 k...@arrl.net
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