"Taming the stray (parasitic) R, L, and C can be quite challenging" is the understatement of the century! And then there is the heat issue! I have been designing high power solid-state linear amplifiers since the early 70s and have the greatest respect for anyone who has even the slightest inkling of what it takes to design a reliable 160 thru 6 meter high power linear!
73, Hal W7YNC -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown Sent: Wednesday, November 02, 2022 11:29 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA1500 replacement devices On 11/2/2022 11:22 AM, Dynolab wrote: > The ART1K6 looks like the best choice. I'd be VERY cautious about replacing output devices in an amp that goes from 2 to 50 MHz. Taming stray (parasitic) R, L, and C can be quite challenging. It took Elecraft's engineers a while to do that, and it was their job! One of the guys who did it, K6XX, is my neighbor. 73, Jim K9YC ______________________________________________________________ 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 dyno...@comcast.net ______________________________________________________________ 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
