RE: LF: Unknown signal

[Lubos <bvgbob@hotmail.com>]

Hello Gary and all!

Yes, you are right. I have noticed the same effect :

 

 

Lubos, OK2BVG

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Date: Fri, 24 Jan 2014 16:40:44 +0000
From: g4wgt@tiscali.co.uk
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Unknown signal

Hi Dave, Lubos & LF,

First showing on my grabber about 1500utc & audible shortly afterwards.

I notice that the center frequency has moved up & is almost right on BIA (NDB) carrier frequency.

73, de Gary - G4WGT
                            
MF-LF-VLF Grabber : http://myweb.tiscali.co.uk/wgtaylor/grabber2.html
Web : http://myweb.tiscali.co.uk/wgtaylor/index.html

.

On 24/01/2014 16:00, Dave G3WCB. wrote:

Hi, Lubos.

 

Yes, I'm hearing it again this afternoon. It became audible - faded in - at around 15 30 UTC

 

73,

 

Dave G3WCB IO91RM 

-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of Lubos
Sent: 24 January 2014 15:56
To: _RSGB_LF
Subject: RE: LF: Unknown signal

Hello Dave!

Thanks for your piece of information. Now, I have switched my RX on and the strange signal is on the band again. Hmmm. It must be really big TX, because the signal is  audible across The Europe.

Lubos, OK2BVG

**********************************************

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From: ganymede444@btopenworld.com
To: rsgb_lf_group@blacksheep.org
Date: Thu, 23 Jan 2014 21:28:32 +0000
Subject: RE: LF: Unknown signal

I can hear it here also. It's not local to me - it exhibits slow QSB. It might be a defective Navtex TX.

 

73, Dave G3WCB IO91RM

 

 

 

 

 -----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of wolf_dl4yhf
Sent: 23 January 2014 19:08
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Unknown signal

Same signal here in JO42, quite strong but with the usual QSB.
Sounds a bit like a PSK 'idle' signal, but distorted. Or RTTY.

73,
  Wolf .
 
Am 23.01.2014 19:43, schrieb Lubos:

Hello Friends!

There is a strange signal on 473.9kHz - see the capture:

 

 

I can see the signal on Stefan´s MW grabber as well. Any idea about this one?

Lubos, OK2BVG