Wayne, Thank you for taking the time to reply on a weekend.
I'm not an EE, so I could have flubbed this test, but here is what I did: With ACC2 IO PTT=LO, KX3 power output set to 0.0W, and CW Skimmer monitoring the RX I/Q from the KX3, I plugged a brand new plug into the end of the short ACC2 cable supplied with the 'KX3-PCKT Cable Set' (no connection to the 590), then shorted the tip to the sleeve. The KX3 TX light came on as expected. I keyed up a short dit on the 590 at five watts (into a dummy load, for the record) and was able to see the dit show up on the CW Skimmer screen at the 590 TX frequency. Curiously, when I went to the KX3 right after reading your post, I could not immediately recreate the behavior. With no intentional change to the setup, it started happening again, which is when I did the experiment above. Let me know how you'd like me to proceed. I can try to load older versions of the firmware, but I'll wait for your recommendation. 73, Mark Glenn K7MJG -- View this message in context: http://elecraft.365791.n2.nabble.com/Possible-firmware-regression-related-to-ACC2-IO-PTT-LO-tp7567198p7567268.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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html