Ron W3ZV wrote > > Noted that the voltage on RX was 13.6. Dropped to 12.6 with 75 watts RTTY > TX. Supplied power cord to an Astron RS-35M. I am concerned that the drop > may be excessive. I'd like to make sure that there is a problem before I > start tearing into things. Cause for concern? >
This recently came up on the Yahoo K3 list where N4PJ reported a 1.0V drop using a RS-35M (13.6 to 12.6 key down). I also use the RS.35M and my drop is 0.4V (14.6 to 14.2 with 110W key down). I'd check that your connections at the RS-35M are solid. Many of these hum slightly which can cause the nuts to loosen slightly over time. I run my voltage higher to improve TX IMD performance on SSB. Elecraft's maximum spec is 15V. There's a wheeled pot on the underside of the RS-35M control board (or any Astron for that matter) which adjusts the output voltage but be careful when adjusting it! 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Voltage-drop-tp7318310p7319046.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
