On 6/18/2018 10:20 AM, Edward R Cole wrote:
Any advice from KX3 users of digital modes (particularly on 6m) would be appreciated. It can be off-list as this as probably been "hashed over" before (I just didn't pay attention).
I'll stick to the list. First, temperature stability is a MAJOR issue on the higher bands, especially 6M, for early serial number KX3s. As an introduction, skim this page. http://www.bigskyspaces.com/w7gj/KX3HeatSinks.htm
After Lance's KX3 was built and after he made Elecraft aware of the issues, the main board was redesigned to eliminate the problem he highlighted, and the heat sink was beefed up. Elecraft also built into the firmware support for a temperature compensation procedure to be done by users.
The good news is that, IF the TC run is done, a current production KX3 with these running production changes works very well for MSK and FT8 on 6M. The bad news is that while the main board can be replaced, it is VERY expensive. Better to sell your older KX3 and buy a new one. :)
73, Jim K9YC ______________________________________________________________ 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]
