5 transmissions are completed now. I
expect this is enough to leave a
clear decode at RN3AUS.
Alex' txt files will be invaluable this time :-) They may contain the
messages of VO1NA, W4DEX as well as my litte contribution on 5170 Hz
over the negligible distance of 1985 km :-)
Without having the confirmation of a successful message decode i'm
announcing and starting the next message this evening. This will take a
while to decode near Moscow. It can be a challenge of the other VLF
receivers in the region:
f = 5170.1000 Hz
Start time: 28.Dec.2017 15:30:00 UTC (daily)
Symbol period: 30 s
Characters: 12
CRC bits: 6
Coding 16K21A
Duration: 13:04 [hh:mm]
Antenna current: 300 mA
73, Stefan
Am 23.12.2017 01:32, schrieb DK7FC:
VLF,
It feels good to be back on the well audible frequencies. Finally i'm
running a carrier on 5170.005 Hz again, since 21:30 UTC. The target
antenna current is 300 mA, the actual level is arround 260 mA at
present.
The carrier will run until my next EbNaut message will start tomorrow!
In October Alex and me managed to pass 1 character on 5170 Hz over the
almost 2000 km land path, a record distance on that band. Now the next
challenge is to try 3 characters. Since the nights are long, we can use
very long transmission times. However i think the FFT window length at
RN3AUS is currently just 13.27 hours so i try:
f = 5170.1000 Hz
Start time: 23.Dec.2017 15:30:00 UTC (daily)
Symbol period: 60 s
Characters: 3
CRC bits: 11
Coding 16K21A
Duration: 13:04 [hh:mm]
Antenna current: 300 mA
73, Stefan
