In 22 and 23 april 2017 Stefan DK7FC did additional test ebnaut transmissions on 6470Hz. Similar to the previous tests, the transmission was decoded as usual by Paul Nicholson (850km) and also by Jacek SQ5BPF (900km).
The transmission parameters from 22 april 2017 were:
f = 6470.100000 Hz Start time: 22.Apr.2017 07:00:00 UTC Symbol period: 40 s Characters: 2 CRC bits: 32 Coding 16K21A Duration: 11h, 22m, 40s Antenna current: 460 mA
Ebnaut decoder output (the received message was “RR”):
found rank 0 ber 4.0039e-01 Eb/N0 4.6 M -1.306843281e+00 [RR] ps [ 0 0 0 0 0]
carrier phase: -15.0
carrier Eb/N0: 4.0
carrier S/N: 14.56 dB in 24.4 uHz
elapsed 36
The transmission parameters from 23 april 2017 were:
f = 6470.100000 Hz Start time: 23.Apr.2017 05:00:00 UTC Symbol period: 40 s Characters: 2 CRC bits: 32 Coding 16K21A Duration: 11h, 22m, 40s Antenna current: 460 mA
Ebnaut decoder output (the received message was “RR”, same as 22 april 2017):
found rank 0 ber 4.0430e-01 Eb/N0 4.2 M -1.500551939e+00 [RR] ps [ 2 30 30 30 30]
carrier phase: 21.9
carrier Eb/N0: 3.8
carrier S/N: 14.34 dB in 24.4 uHz
elapsed 106