开云体育

Hi,

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while monitoring the WSPR signal from my QMX to figure out why I didn't get spotted at all, I found out that the QMX was not sending on the right point of time but shifted by several dozens of seconds.

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I then did some experiments by attaching / disconnecting the GPS module and it seems that the QMX clock will not always be 100% in sync.

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At first glance it seemed that after a disconnect (or signal loss maybe?), the clock of the QMX may jump back to some older point in time.

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My expectation was that I can sync the QMX via GPS once and then switch of / disconnect the GPS with the QMX clock being still in sync (for the next couple of hours) but apparently this is not the case.

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When doing these tests, I was entering the beacon menu a couple of times, and finally I found the culprit:

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As soon as the time menu item is being displayed - without entering it for editing!! - the clock of the QMX will be reset to the time just indicated there! Especially that means that the seconds will be reset to zero. It's 100% reproducible with 1.00.20 firmware.

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73, Andreas