4CX800's have not been discontinued. The truth is that the old military version of it, the GU74B is no longer produced. Gone with it is the low price of less than $100 a piece for those old, dark gray, tarnished-looking tubes.
4CX-800's are being made all the time,and they look nice and shiny like Eimac tubes, and they have an equally "Eimac-level" price of about $500 each! 73, Bob W5OV Array Solutions (THP and Acom Dealer) '> > I haven't operated an Acom, but note that it uses 4cx800's (as do a few > other > companies). Those have been discontinued, and not having a future source > of > tubes could be a concern. That's why Alpha switched the tube in its 8400 > from 4cx800's to a 4cx1000's (new model is an 8410). > > The THP is a nice amp, but bear in mind that solid state amps are more > sensitive to SWR issues than tube amps. If you don't have good resonant > antennas, a tuner may be essential. I also found that the THP 1.5 required > 100 watts plus from my K3 to drive it to full or close to full power, > whereas my PW-1 and Alpha 87A required a lot less for full output. > > If I were looking for a non auto-tune tube amp, I'd seriously consider the > Alpha 8410, perhaps one that uses 3-500Z's (inexpensive and readily > available). Not sure where I'd go on an autotune tube or a solid state > amp, > other than what I'm currently using. > > > 73, > > Lou > > >>I am thinking about a move up in power for my K2/100. The reviews >>seem to favor an Acom 1000 or Tokyo Hi-Power. What is the collective >>wisdom here? Thanks >>Dave K6CGE > > > ----- > St. Louis, MO > K3 #2513 > -- > View this message in context: > http://n2.nabble.com/Amplifier-suggestions-tp4417753p4421482.html > Sent from the [K2] 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:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ 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
