Hello Joe,
Am 16.11.2012 21:36, schrieb Joe Taylor:
Hi Markus, Stefan, and all,
It appears that you have things working reasonably well in JT9-1.
Here are the decodes Markus received from Stefan:
UTC Sync dB DT Freq Drift Message
----------------------------------------------------
1916 10 4 1.4 1940. 0.0 DF6NM DK7FC -03
1918 10 -2 1.5 1940. 0.0 DF6NM DK7FC -03
1920 10 -3 1.4 1940. 0.0 HURRAAAAAAAAA
1922 10 -4 1.4 1940. 0.0 HR 30W TX PWR
1924 10 -2 1.5 1940. 0.0 MENSCH MARKUS
1926 10 0 1.5 1940. 0.0 PSE AGN RPRT
1928 10 1 1.5 1940. 0.0 PSE AGN RPRT
1930 5 4 1.5 1940. 0.0 UR -3...+5DB
1932 10 -9 1.6 1940. 0.0 NW 5W TX PWR
1934 1 -6 1.5 1940. 0.0 HALLO MAX 4TS
1936 10 11 1.6 1940. 0.0 NUR80 CPI
1938 10 3 -1.3 1945. 0.0
1940 10 4 -0.1 1940. 0.0 SPITZEN SACHE
1942 10 9 -0.0 1940. 0.0 YOU HAVE A CA
1944 10 -3 0.0 1940. 0.0 UR -7...+5DB
1946 10 16 0.0 1940. 0.0 1943 AGN PSE
1948 10 18 -0.0 1940. 0.0 1943 AGN PSE
1950 10 12 0.0 1940. 0.0 OK73NM FC SK
1952 10 6 0.1 1940. 0.0 CIAO MARKUS55
1954 2 -37 0.0 1918. 0.0
What happened between the transmissions at 1936 and 1940?
No changes were done from my side on the RX PC (I use one PC for
generating JT9-1 and another PC for receiving on LF/MF). The time server
program is synchronizing once a minute! So maybe it happens on the TX
PC. But Markus decoded every message! Odd...
You know, no problems in WSPR, which uses SpecLab+VAC in the audio chain
as well...
73, Stefan/DK7FC
The measured clock offset DT changed from about +1.5 s to nearly
zero. (Note that +1.5 s is an unusually large offset, possibly
indicating a problem. In general, with good NTP synchronization at
both ends, DT should be nearly constant and in the range +/- 1 s.)
-- Joe, K1JT
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