Here's an update. I replaced the power cable running from the powerstrip with a 3-foot length with glass fuse holders in each leg. I also adjusted the power supply to 14.50V at rest. The K3S now shows 14.2V at rest. At 100W TX the K3S shows 13.2V, so a 1 volt drop. Way too much.
The power supply voltage measured at the terminals drops from 14.50 to 14.44 for full power TX. This seems too much, I had read the drop should be no more than 0.01V and this is 0.06V. So, suspecting the in line fuse holders I made up another cable with dual blade-fuse holders, which was worse. TX voltage on the K3S display dropped to 12.9V. I'm suspecting my power supply is to blame - it's a TenTec 963, a re-branded Astron SS-30. Alternatively, I have another commercial power cable with fuse holders I can cut down and try. Many thanks for all the help both here on the reflector and the direct emails from several fellows, and to Rich VE3KI for the on-air tests this morning! 73 de Chuck, WS1L -- =================== Chuck Chandler [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]
