Bob - Would you care to share your KPA500 power measurements at each of those drive levels (and test mode used)?
Thanks! 73 Lyn, W0LEN (KPA/KAT500 user) -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bob McGraw Sent: Sunday, September 19, 2021 9:22 PM To: [email protected] Subject: [Elecraft] KPA1500 Power Level I've said this for years, even with tube type amplifiers. One exception, to which I'm aware, is the Johnson Thunderbolt which uses a variable L along with variable C for the input components to the Pi L network. Otherwise, the Pi network input circuit is using a fixed value of L and a variable C for the frequency. Thus it is designed to match the output device Z only at rated power. I've performed power measurements on my KPA500 on all bands at 100 watts, 200, watts, 300 watts, 400 watts, and 500 watts output. Measuring input power and output power and calculating efficiency, dissipation, and gain on all bands, 160M - 6M. 73 Bob, K4TAX ______________________________________________________________ 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 Message delivered to [email protected]
