[600MRG] WE2XGR/2 in GMSK mode 478.000 kHz
jrusgrove at comcast.net
jrusgrove at comcast.net
Sat Mar 16 18:06:46 CDT 2013
WE2XGR/2 will be testing in GMSK (Gaussian Minimum Shift Keying) speed 31.25 on 478.000 kHz (dial)
+800
for the next several hours. Current transmitter power level is noted in the message. Suitable
software for decoding (MMVari) can be found at http://hamsoft.ca/pages/mmvari.php . Sound card
setup, etc is similar to most other digital communication programs. Select GMSK mode and 31.25
speed from the pull down boxes. Set RX to 800 and receiver dial to 478.000 USB (unless you prefer
other settings). If you're unsure of your sound card sampling rate it's probably best to run with
AFC on.
While not a 'weak signal' mode at these speeds, reports from near and far are appreciated. Always
especially interested in observations of 'static resistance' and 'fade recovery' ... the two main
issues with digital modes.
Jay W1VD WD2XNS WE2XGR/2
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