Re: VLF: Carrier on 8270.00 - EbNaut

[Markus Vester <markusvester@aol.com>]

Hi Stefan,

despite the premature termination of the transmission, it was easily decoded from my suburban antenna in Nuernberg. In Amberg, a blue haze became visible around 8270.1 Hz, which indeed ended near 3:15 UT.

Though the message content may still be "classified" I'll anyway disclose that I got a nice visual palindrome.

Best 73,
Markus


-----Ursprüngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 22. Dez 2018 11:03
Betreff: Re: VLF: Carrier on 8270.00 - EbNaut

Thanks for the feedback Paul. The transmission was interrupted by the
safety function in SpecLab, due to rain which reduced the antenna
current under the limit.....
Jay mentioned he was not ready anyway so this night was rather a test.

Such short messages are a good option for newcomers who like to try  to
get a first message decode on VLF :-)

73, Stefan

Am 22.12.2018 08:05, schrieb Paul Nicholson:
Stefan wrote:

 each night,
 f = 8270.1 Hz
 Start time: 21.DEC.2018  21:00:00.3 UTC (repeating each night)
 Symbol period: 36 s
 Characters: 3
 CRC bits: 20
 Coding 16K21A
 Antenna current: 620 mA
 Duration: 09:16:48 [hh:mm:ss]

 A good transmission, Eb/N0 +14.3 dB here.

 -- 
 Paul Nicholson
 --

df6nm_12212345_sym.png
Description: PNG image

df6nm_12212345-log_hidden.txt
Description: Text document