I just realized that both my K3's running FW 4.67 are no longer locking to the K3EXREF calibration signal from a Trimble Thunderbolt. Specifically, the "REF CAL" config menu item does not show the flashing asterisk and moving the main tuning knob does not show "LOCKED". I have had the K3EXREF installed and operating properly with both rigs for at least a year.
The Trimble Thunderbolt provides the 10MHz calibration signal to both K3's though a MiniCircuits splitter. After checking the power supply and output levels of the Thunderbolt, which were nominal, I decided to see if the K3 firmware could be responsible, since I had fairly recently upgraded to 4.67. Indeed, rolling back to 4.51 re-enables the normal "REF CAL" behavior! Can anyone else verify this? ----- 73, Stan - KR7C -- View this message in context: http://elecraft.365791.n2.nabble.com/FW-4-67-and-K3EXREF-tp7576395.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
