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Re: LF: what is this signal ?

To: [email protected]
Subject: Re: LF: what is this signal ?
From: Stefan Schäfer <[email protected]>
Date: Mon, 17 Jan 2011 17:04:56 +0100
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]>
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Hi Ugo,

Yes i confirm ;-)
Try if you can receive the lower frequency as well, it is at 11.9047619 kHz!
I am monitoring VLF continuously at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html See the lower capture, there are the 3 traces of the Alphas, currently at about 20 dB S/N in 1.4 Hz. Maybe you need a capture to compare your own results. Unfortunately i have some QRM by a local tram line but it is a narrow band noise source at least... Currently it seems that OE5ODL is transmitting at 8970.02 Hz. He is in JN68 so not to far from you! Maybe you can receive him as well!

73, Stefan/DK7FC

Am 17.01.2011 16:32, schrieb Ugo - SWL 1281/VE:
Hello Stefan.
I'm from Italy (JN66) and I received that signal yesterday afternoon with my 
Perseus and pa0rdt mini whip as aerial.
I was synthonized on VLF looking for Alpha stations but I wasn't sure it was a 
real alpha signal.
If you confirm, I'm very happy !!!
Thank you for your reply and info.
73, Ugo.


(sent using iPhone)

On 17/gen/2011, at 16:09, Stefan Schäfer<[email protected]>  wrote:

Hi Ugo,

You are from mexico? :-) Just saw it in the mail adress.

Yes, 14.881 kHz is the upper Alpha frequency. See some informations at 
http://www.vlf.it/alphatrond/alpha.htm

You are receiving on VLF? What is your antenna and goals? :-)

73, Stefan/DK7FC



Am 17.01.2011 10:04, schrieb Ugo - SWL 1281/VE:



Good Evening.
I'm novice of LF reception and I'm wonderig if this could be an Alpha station.
I'm receiving this signal at 14.881 Khz.
If it's not an Alpha station, what could be ?
Thanks in advance for any reply.
73, Ugo - swl1281ve





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