Don, Yes, things settle down with a dummy load, so it looks like I'm dealing with RF feedback.
Per the original post, I'm using an Elecraft BL2 balun at the coax/ladderline junction. Shouldn't this act as the common mode choke that you suggest or are you suggesting to place a common mode choke in addition to the balun? Interesting idea regarding the KPA100 latest version since 40m is the troublesome band. I purchased the KPA100 around 2011-2012, so I would think it has the latest hardware but I'll double check when I get a chance. 73 Brian, N5BCN -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Unstable-power-output-on-40m-digital-modes-tp7609533p7609539.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 Message delivered to [email protected]
