Don wrote: > Those first point contact transistors such as the CK722 were rather >'finicky'.
Point-contact transistors could be variable in terms of electrical characteristics, but mechanically they were a lot better than mythology presents. Regardless, the famous 1953 Raytheon CK722 was *not* a point-contact transistor. It was a Germanium junction transistor. It is very unlikely that anyone here ever worked with point-contact transistors...they disappeared quickly after the junction transistor appeared in 1951. Alan wrote: >> Reminds me of comments I heard hams make about transistors during the >> tube-to-transistor transition 50 years ago. They were late talking about it then. I don't recall that argument having much strength left by 1965. The Raytheon SBE-33 HF ham transceiver came out 52 years ago, followed by the SBE-34 two years later. They were all transistor except for driver and finals and were very successful ham rigs. And the most successful military tactical VHF-FM sets of all time...the AN/VRC-12 series and AN/PRC-25, all transistor except for finals, were fully developed by 1961...and remained in some US service until 2008!!! Mike / KK5F ______________________________________________________________ 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
