If it’s a regulated power supply with crowbar And the radio has a fuse why are you using inline fuses?
Sent from my iPhone > On Apr 25, 2020, at 10:04, Chuck Chandler <[email protected]> wrote: > > 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] ______________________________________________________________ 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]
