Re: U3S fw 3.12 no heartbeat no cal


Hi Sebo,
no heartbeat means u3s not seeing 1PPS signal used in CAL. No CAL means tx frequency will be in error. You need to trace 1PPS signal is getting to u3s and find bad connection.

Do not run clock and u3s from same qlg1 at the same time.
73 Ken g4apbĀ 

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