I just got an idea: From the last experiments on various VLF and ULF
frequencies we saw different phase angles between day and night for
different frequencies (and different locations). Maybe Paul can give an
overview of the phases between our TX and RX locations for 8270, 6470,
5170, 2970, 4470 Hz... I remember he said that there is a day-night
offset of 20 deg on 4470 Hz.
Now, can we find a (or some) frequency where that offset is 0 ? Then we
could try to run EbNaut messages with very long symbol lengths, instead
Of course, the terminator will mess up the SNR for a few hours. But in
the end it could be an interesting game.
So far, the longest symbol lengths used were 120 seconds or so. It would
be interesting to use 600 seconds or so. I could try to send a 1
character message with 0 CRC bits, which would be the next interesting
Just a thought :-)