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,
Hi Tony,
The aircraft reflections are usually recognizable. You can hear the
pulsations in the background noise change in rate as the airplane flies
around and sometimes even see the frequency shift on the waterfall, but
the big problem is that there is an almost constant, often fast, shift
It is claimed the 432.045 MHz Moon Bounce signal from KP4AO, Arecibo, Puerto
Rico, on April 16-18 will be so strong that it can be heard with just a small
hand-held Yagi pointed at the moon.
Live Video Streaming is at
http://www.ustream.tv/channel/kp4ao-eme
Arecibo on 432.045 MHz Moon
The current DXCC rankings at Clublog for members of the digitalradio group are
RankCallsign160 80 60 40 30 20 17
15 12 10 6 4 2 70 Total Slots Range
1 N7DC130 213 2 270 269
All,
I'll be QRV for digital mode testing once again this evening after 2300z
(April 16) till 0500z (April 17).
QRG 14107 / 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
