|
Mike,
looking at JT9-1 and -2, transmissions
appear to start one second after (not before) the minute tick, and end
about 10 seconds before the next one. I find that this is also correctly
displayed on the waterfall, ie. with a small empty gap between the minute
marker and the start of the carrier, and a larger gap at the end.
I have no explanation for your observation
that incoming signals seem to start before the minute marker. Did
you see this on a local test signal from a second program instance? Or
from a remote station, whose clock might have been running
ahead?
Best 73,
Markus (DF6NM)
Sent: Saturday, November 10, 2012 3:32 PM
Subject: LF: WSJT-X timing
I notice by
zooming in on the waterfall display (Pixel = 1) that,
despite my computer
clock being synchronised with a time server, the
transmissions seem to start
about one second before the waterfall
line indicating the start of the time
period, and end a few seconds
before the next line.
Do others see
this, or is there space before and after the
transmission on your waterfall?
Is this a clue to my unreliable
reception (ie that my receive setup is
slightly behind the
transmitted signals)?
MIke,
G3XDV
|
