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Discussion of precise time and frequency measurement

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Lady Heather 5.00 doesn't keep time

JT
JULIAN TOPOLSKI
Mon, Aug 14, 2017 12:58 AM

I installed version 5.00 of Lady Heather as the 3.1 version was affected by the GPS Rollover. It stopped displaying the digital clock which I used as a station clock for my ham radio logging. So I installed and ran version 5.00, specifying the digital clock. It worked for a while with correct time as I compared it to the digital clock display in the WSJTX software GUI. I haven't determined how long it takes but it is in the range of 5 or 10 minutes and then I notice a difference between the clocks. Checking with WWV on the radio, the WSJTX clock is right on but LH is off by some 20 seconds. Is there a bug in LH5.00? Is there an option I didn't set? The 3.1 version worked without any special options other than full screen and digital clock selected.

Julian KR5J

I installed version 5.00 of Lady Heather as the 3.1 version was affected by the GPS Rollover. It stopped displaying the digital clock which I used as a station clock for my ham radio logging. So I installed and ran version 5.00, specifying the digital clock. It worked for a while with correct time as I compared it to the digital clock display in the WSJTX software GUI. I haven't determined how long it takes but it is in the range of 5 or 10 minutes and then I notice a difference between the clocks. Checking with WWV on the radio, the WSJTX clock is right on but LH is off by some 20 seconds. Is there a bug in LH5.00? Is there an option I didn't set? The 3.1 version worked without any special options other than full screen and digital clock selected. Julian KR5J
MS
Majdi S. Abbas
Tue, Aug 15, 2017 3:00 AM

On Mon, Aug 14, 2017 at 12:58:53AM +0000, JULIAN TOPOLSKI wrote:

Checking with WWV on the radio, the WSJTX clock is right on but LH
is off by some 20 seconds. Is there a bug in LH5.00? Is there an
option I didn't set? The 3.1 version worked without any special
options other than full screen and digital clock selected.

"some 20 seconds" sounds a lot like the 18 second difference

between the GPS timescale and UTC.

Check and ensure your receiver is set to produce UTC if that's

what you expect.

--msa
On Mon, Aug 14, 2017 at 12:58:53AM +0000, JULIAN TOPOLSKI wrote: > Checking with WWV on the radio, the WSJTX clock is right on but LH > is off by some 20 seconds. Is there a bug in LH5.00? Is there an > option I didn't set? The 3.1 version worked without any special > options other than full screen and digital clock selected. "some 20 seconds" sounds a lot like the 18 second difference between the GPS timescale and UTC. Check and ensure your receiver is set to produce UTC if that's what you expect. --msa