Return to KLUBNL.PL main page

[Top] [All Lists]

Re: VLF: DK7FC close to SAQ

To: [email protected]
Subject: Re: VLF: DK7FC close to SAQ
From: DK7FC <[email protected]>
Date: Mon, 27 Nov 2017 10:34:34 +0100
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/simple;; s=2017; t=1511775276; bh=dOxJvzPEeUB+63L7TL0DP19xnuw439ajMIFU2nhsSHQ=; h=Date:From:To:Subject:From; b=lgljCJnyVeOmULMhaV/SBaVgrPLfYhiP0Rs5LwIZvgQGmkjUcJWwJs5uVNovvEuoQ ihF1rNj91J39GtlfsQDMlaNaEecs7KK3fOCJR4D6Lwdt+aPD5Fm+zozMpylIF6v6FQ RGF6LEhKfNW9wL8E8Ow5fXCHS73uUiUHNrCf+8oQ4vKvsUrJcPzZB+IasP7glqLkBm oYSE2XmPzn64tb84w9KcbfDYEQ+i0Wz1Vq3DtLWidn7dgD7Ro5I/aDbFAUsnCT4iT7 fpEPqhkqrVuJZLjEVLxVmqV9VphE99h6VH/O8N1mx3xTgUzeyrsHOeV05Vh2NplnWK vIbo8lN63Zo1Q==
In-reply-to: <[email protected]>
References: <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv: Gecko/20100227 Thunderbird/3.0.3
Hello Markus,

thanks for the feedback. Wonderful, now it is 30 dB in 424 uHz. DL0AO could run a 3.8 mHz '600' RDF spectrogram and a phase and signal level plot, so we could see propagation effects much better.
You could already see QRSS-60 from me! I will try that soon.
The carrier is still on the air. It will run the whole day and night...

73, Stefan

Am 26.11.2017 15:59, schrieb Markus Vester:
Yeah it's there! More than 20 dB SNR at DL0AO:

Excellent activity!

73, Markus (DF6NM)

-----Ursprüngliche Mitteilung-----
Von: DK7FC <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: So, 26. Nov 2017 0:42
Betreff: VLF: DK7FC close to SAQ


Since 23 UTC a 700 mA carrier is running on 17.4701 kHz!

It is a little surprise to the VLF community i think ;-)

Legal? Yes:,47kHz_Sonderlizenz.jpg
Actually the document has 3 pages but the other ones are no so relevant.
My ERP is limited to 5 mW. I did not request more because more isn't possible anyway with this antenna.

I wound a big single layer coil with 0.5 mm enameled wire on a PVC tube with 315 mm outher diameter.

0.7 A is just a first careful step. The coil is designed to hold 1.5 A 'key down'.

The carrier will run the whole night and even tomorrow at daytime.

Worldwide reports are welcome ;-)

It is not sub-9-kHz but still VLF, the 17 km band!! So give it chance :-)

The tree has still some solar power to stream the signal from the EW loop down to the city, so there is a feedback spectrogram at

73, Stefan

PS: I still can hear that tone of the coil. It is terrible! Be happy when you are older than me!
<Prev in Thread] Current Thread [Next in Thread>