Can you safely increase the drive to get it back to 1500W?
Another question: Is the drive requirement (amp gain) pretty flat from band to band?
- Paul KW7Y At 08:10 AM 5/31/2018, Bill Stravinsky via Elecraft wrote:
Yup, as the temp climbs the output drops some. Even though I'm glad I got the solid state amp I still prefer tubes, hi. The drop is anywhere between 100 to maybe 300 watts.I never really noted the exact numbers. BillK3WJV p.s. I'm thinking its a normal solid state thing. On Wednesday, May 30, 2018, 4:23:47 PM EDT, K9MA <[email protected]> wrote: I'm using the K3 with the Elecraft interface cable. I've noticed the the CW drive power required by mine varies considerably, both with temperature and SWR. If I set the K3 output for a KPA1500 output of 1500 W output initially, the output will drop to perhaps 1100 W when the temperature stabilizes at around 65 C. (I've ruled out any change in antenna impedance, etc.) A similar change occurs if the SWR goes from 1:1 to 1.2:1 when changing frequency or switching antennas. I haven't changed the ALC from the default setting. Has anyone else noticed this? 73, Scott K9MA -- Scott K9MA [email protected] ______________________________________________________________ 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] ______________________________________________________________ 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]
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