Re: VLF: Weekend on 8270.0025 Hz

[DK7FC <selberdenken@posteo.de>]

Hello Markus,

Thanks for your transmission. It was well visible here. Later i'll tell more about the SNR and how many characters could have been transferred in a message.

Thanks to you and the DL0AO crew for participating again tonite. Probably i will call you again on the phone ;-)

73, Stefan

Am 13.04.2019 18:42, schrieb Markus Vester:

It's been a while since my last VLF transmissions last December, and I've started to develop symptoms of abstinence. So I decided to push up the antenna once again and sent a few hours of straight carrier, with my usual ~ 10 uW EMRP:

Fri  2019-04-12    9:13 - 11:23   8270.0025 Hz,

Fri  2019-04-12  17:18 - 19:19   8270.0025 Hz,

Sat 2019-04-13    6:36 - 10:30   8270.0025 Hz,

Sat 2019-04-13  10:30 - 11:20   ~8270.01 Hz (slight drift due to lost GPS lock).

I was pleased to find traces on various grabbers:

Todmorden: http://78.46.38.217/fbins3.html#p=1555167600&b=115&s=fd&m=cardioid&w=h&h=62&z1=0.38&z2=0.72&c=5&mb=629,157,677,188,0

Warsaw: https://klubnl.pl/wpr/en/index.php/klubnl-pl-grabbers/grabber-4-8270hz/ (see attached screenshot)

Heidelberg: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html (red on the 424 uHz the colour RDF)

Amberg: https://vlf.u01.de/  (cyan, best on the W cardioid)

Best 73,

Markus (DF6NM)