Hi Al, Indeed one could combine amplifiers by using Hybrid Combiners. However when used for SSB and especially if driven by a typical amateur solid state transceiver working from a 12V DC supply, a potential problem to be considered is that the level of Odd Order IMD products as seen at the output might become too high relative to PEP (or test tone).
Granted that this problem can also arise when using any other form of linear amplifier when driven by a similar exciter, but when using "Combined`Amplifiers" some (if not all) of the IMD products appearing at the output of each amplifier can add when combined i.e stronger IMD products transmitted. Lucky if they cancel :-) 73, Geoff LX2AO On February 22, 2012 at 12:58 +0100, Alan Bloom wrote: > You could do it with four unmodified KPA500s and three hybrid combiners. ______________________________________________________________ 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
