VLF: TA east to west?

[DK7FC <selberdenken@posteo.de>]

Hi Paul, VLF,

I changed the subject of the discussion...

Am 06.12.2017 22:49, schrieb Paul Nicholson:
> > How far could this signal travel! We are missing
> > RX stations everywhere!
>
> Forest, Virginia, is reporting Eb/N0 = -7.5dB on
> the 4 char transmission.  That's -38.55 dB in 1Hz.
>
> Distance is 6817 km.
That is great!! Thanks for looking on that receiver! -7.5 dB for 4 
characters during a suboptimal time period, that's fantastic!
We are very close to a first east-to-west VLF TA decode/detection i think.
I will try to run more antenna current this evening and i will use just 
a 1 character message. That could work!
Please, could you check how deep the last 3 character message is buried 
in the noise on that RX? The timing is close to optimal and just 3 
characters, so the Eb/N0 could be -5.x dB?
What about the other receivers on your list http://abelian.org/vlf/ 
There are even farer distant monitors. Maybe you know the operators and 
the performance of their system. Is there another one which could have a 
chance to decode a message.
> Recommend starting a bit later, say 00:00 or 01:00,
> and maybe we do some stacking too?
Unfortunately the SR is just 32 kS/s. With 48 kS/s we could check when 
the terminator of JXN and HWU appear there. So i will check when the 
sunset will be there by using google earth.
Stacking will be required, at least for longer messages. It will be 
interesting how this works on sch a distance!
73, Stefan
> --
> Paul Nicholson
> --