I had the same issue with my K3S. I was seeing 80W maximum on 160 and it would not drive my AL1200 to full power (1500W). Redoing the power calibration did not fix the issue.
Elecraft Tech Support told me that my K3S was within spec but that increasing the power supply voltage could yield more power output. I ended up increasing my supply voltage from 13.8 volts to 14.5 volts and was able to get 90W out, which was a bit of an improvement. There is a trim pot inside my Astron RS-35M supply that adjusts the output voltage. 73, John W1FV ------------------------------ Message: 10 Date: Sat, 17 Dec 2016 00:27:48 -0500 From: "Gary Smith" <[email protected]> To: [email protected] Subject: [Elecraft] K3s - 80W on 160 Message-ID: <[email protected]> Content-Type: text/plain; charset=US-ASCII I usually don't run barefoot at 100W and don't drive my amp with more than around 50W. Tonight when I tried running at 100W on 160 I was surprised to find it only putting out 81W. It puts out incrementally till 81W and then even though I can adjust the power so it reads 100W on the K3s LCD bar and numerical display, the watt meter in the P3 and the LP-100A both show the wattage stopping at 81W. With the ATU in or out it gives 81W out on 160, SWR is 1.28 All other bands except 6M give around 98W, 6M gives 87W Any ideas what might be causing the lower output on 160? Thanks & 73, Gary KA1J ______________________________________________________________ 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]
