Hi Stefan,
just a quick question ;-) does the used code such a big difference on
the spectrum?
I mean during this week you transmitted 7 times (one per
day) a message (not decoded neither seen from my side :-( ) which is
displayed on the DL0AO grabber like a plain carrier, today you started
a longer message and no sign appears.. I cannot understand the reason :-
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By the way now which is the right moment on LF/MF I guess I have a
faulty impedance transformer on the MF TX antenna and 1 hour ago while
testing new transformers to replace the faulty one the MF/LF medium
power TX went in short and either one or both FET joined the others in
the FET Vahlalla.. RIP
73 Marco IK1HSS
----Messaggio originale----
Da: [email protected]
Data: 29-dic-2017 17.55
A: <[email protected]>
Ogg: Re: VLF: Finally back on the 58 km band...
Stefan wrote:
> For this night, i run a short test message, ...
> f = 5170.1000 Hz
> Start time: 28.Dec.2017 18:30:00 UTC
> Symbol period: 90 s
> Characters: 1
> CRC bits: 3
> Coding 16K21A
> Can someone confirm that the message run as expected?
Todmorden (881 km)
------------------
Eb/N0 +12.1 dB phase 50.3 *Decoded*
Bielefeld (303.8 km)
--------------------
Eb/N0 +19.0 dB phase -51.9 *Decoded*
Cumiana (504.6 km)
------------------
Eb/N0 +3.0 dB phase 171.0 *Decoded*
Warsaw (919.3 km)
-----------------
Eb/N0 +0.2 dB phase -10.4 *Decoded*
All decodes at rank 0.
> The message was 'R', if i remember correctly :-)
Correct!
--
Paul Nicholson
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