I had the same. Finally I did read the release notes:
K3EXREF USERS MUST NOW ENABLE THE MODULE IN THE MENU: To do this, locate the CONFIG:REF CAL menu entry and tap 2 to change the setting; flashes XREF IN or XREFOUT. If you DO NOT have a K3EXREF module installed, use the XREFOUT setting (the default). If you use the XREF IN setting without a K3EXREF module installed, you may hear digital switching noise on the 6-meter band.
73 Henk PA5KT Op 7-7-2013 5:54, Stan Gibbs schreef:
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
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