Hi Joel: The upgrade to improve RF immunity affects two different I/O boards. The board with the audio connectors on it and the board with the DB9 and DB15 connectors. The ALC mod kit for $20 is a Rev B version of the board with the DB9 and DB15 connectors. And I don't know if the RF immunity mod was done to that board or not. Someone who has the Rev B board in front of them would have to comment on whether choke L1 has been jumpered across (or perhaps removed entirely).
73, Mike K2MK Joel R. Hallas Fri, 06 Mar 2009 13:58:46 -0800 I appreciate that the REMIOUPGD upgrade kit resolves ALC and band data pull-up issues -- neither of which are of interest to me at the moment. However, I wonder if the new board also includes updates to resolve the RF pickup problems in lines connected to the K3 rear-panel MIC, PHONES, PC IN/OUT and RS-232 rear-panel connectors? If so it would, IMHO, be worthwhile even if I never have anything that reads band data. Regards, Joel Joel R. Hallas, W1ZR ______________________________________________________________ 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
