yesterday October 13, during daytime, i had a very nice
reception with low QRN/QRM floor. So i have invited Riccardo to send
some EbNaut messages with 30 or 60 characters using a very short symbol
period from 1 s to 0.05 s.
We had some positive decodes also with 60 characters and 0.05
2018-10-13_13:30:00 137490.000Hz N=60 T=0.05s 8K19A CRC=16 list=1000 sym=3152 Duration=157.60s
found rank 0 ber 2.1605e-01 Eb/N0 4.5 M -1.234827161e+00 ph 1 180,180,180,180
[TU DOM AND MARKUS FER HIGH BIT RATE EBN0 RPRT 73 DE IW4DXW K]
QRB between us is about 650 km.
So, it is possible to exchange on LF messages of 60 characters
with less than 3 minute transmission. I think that 30 Characters at 0.1
s/symbol can be a good settings for a 'fast' QSO with 10 minutes
timeslot : TX ends within 3 minutes, so, using an auto-decode program,
should be possible to reply at next '10' minute.
73, Domenico IZ7SLZ