Hi EbNaut
I could not decode all the transmissions from Stefan. Some of them were too weak and there is no decode
Also not visible in the slow spectrogram. Notice also the signal from Markus in stronger contrast due
to the 3s per symbol BPSK modulation, slower than 1s per symbol from Stefan
So, this are my results
22:00 --------------
23:00 I AM DREAMING OF A WHITE CHRISTMAS Eb/N: 1.1dB
00:00 --------------
01:00
I AM DREAMING OF A WHITE CHRISTMAS Eb/N: 2.9dB
02:00
I AM DREAMING OF A WHITE CHRISTMAS Eb/N: 4.5dB
03:00--------------
04:00--------------
05:00
I AM DREAMING OF A WHITE CHRISTMAS Eb/N: 2.2dB
73 de Luis
EA5DOM
Good idea Markus,
I just had the same idea because i found a nice message.
So i'm using the even half hours.
f = 137.540 kHz
Start time: 16.DEC.2018 22:00:00.3 UTC (8 hourly repeats)
Symbol period: 1 s
Characters: 34
CRC bits: 3
Coding 8K19A
Antenna current: 4 A
Duration: 30:00 [mm:ss]
73, Stefan
Am 16.12.2018 17:48, schrieb Markus Vester:
Tonight I intend to send a number of different EbNaut messages, commemorating a scientific experiment which ended up changing the world.
Frequency: 137542 Hz
Start times: odd half hours (plus 0.3 s extra delay), Dec 16) 23:30 to Dec 17, 6:30 UT
Format: 7 characters, 3 second symbols, 8K19A, CRC 15 (!)
Duration: 30:00 minutes
Radiated power: ~ 0.4 Watts
Best 73,
Markus (DF6NM)
