Don Wilhelm-4 wrote: > > My novice days were in 1956, and in those days, the T/R switch was a > DPDT lever switch. QSK was only the dream of those first class > stations, and was only possible with a separate receiving antenna. >
The E.F. Johnson TR Switch was commercially available in the 50s and allowed QSK with a single antenna (note the following schematic is dated 1-2-58): http://www.w8ji.com/johnson_tr_switch.htm I used QSK with one of these at ~500 Watts out and a 75A-4 in the 1959-1962 era but don't use QSK now because of the complexity of my receiving antennas. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/6-meters-Newbie-tp5244084p5272918.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
