FWIW, PSK125R does not survive the Doppler disturbances on UHF. Olivia
or Contestia does. Therefore, the mode we have found works best under
the severe conditions of multipath, Doppler shift, Doppler spread, and
very weak signals is Contestia 16-500 at 30 wpm. the minimum S/N is -12
dB, which is essential for weak signal UHF and VHF digital operation as
every dB of S/N we can get is important for weak signal work.
73 - Skip KH6TY
Tony wrote:
All,
I'll be QRV for digital mode testing this evening after 2200z (April 15)
till 0500z (April 16).
QRG 14108 / 3588 (+ / - QRM).
Modes of interest:
1. MFSK32 (Fldigi)
2. PSK250R (Fldigi)
3. MT63 1K (Fldigi)
I've created a test transmission that will send each mode in sequence
starting with MFSK32 and ending with MT63 1K (long iterleave). RS-ID
will be used to facilitate automated band switching. Fldigi needs to be
configured to do this:
Click CONFIGURE > IDs and UNCHECK RECEPTION DISABLES DETECTOR. This will
enable automatic band switching upon the reception of RS-ID. The RX-ID
located in the upper right corner of Fldigi's main window must be
checked (green light).
See you on Andy's sked page http://www.obriensweb.com/sked/
<http://www.obriensweb.com/sked/>
Thanks,
Tony -K2MO
