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Re: VLF: Strong drifting carrier on VLF!

from [mal hamilton] [Permanent Link][Original]
To: <[email protected]>
Subject: Re: VLF: Strong drifting carrier on VLF!
From: "mal hamilton" <[email protected]>
Date: Fri, 6 Aug 2010 16:33:07 +0100
References: <6D39CC1F4253463CB8570333737E59AA@PCCasa><38A51B74B884D74083D7950AD0DD85E82A1C1D@File-Server-HST.hst.e-technik.tu-darmstadt.de><B7FBFD72427D4802BC38C7310FB750A8@PCCasa><38A51B74B884D74083D7950AD0DD85E82A1C2E@File-Server-HST.hst.e-technik.tu-darmstadt.de><[email protected]><38A51B74B884D74083D7950AD0DD85E82A1C30@File-Server-HST.hst.e-technik.tu-darmstadt.de><48711884B26B40129A1D43EBB493A6BF@PCCasa><38A51B74B884D74083D7950AD0DD85E82A1C69@File-Server-HST.hst.e-technik.tu-darmstadt.de><001401cb1645$ce9e81c0$4001a8c0@lark><[email protected]><38A51B74B884D74083D7950AD0DD85E82A1C6C@File-Server-HST.hst.e-technik.tu-darmstadt.de> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Gary
You seem to have a sensitive RX on vlf. Can u see the signal testing on 8.97 approx , my RX not calibrated.
Long dashes with power variations.
de mal/g3kev
 
----- Original Message -----
Sent: Monday, June 28, 2010 11:37 AM
Subject: Re: VLF: Strong drifting carrier on VLF!

Hi Stefan,

When I read your report I set up my VLF (M0BMU) loop & monitored there & also with my JRC NRD-345 Rx.

The signal is quite strong on SpecLab & is moving up the frequency in steps from 14.0 kHz to 15.0 kHz in last 30 minutes. The JRC is showing S5 (noise S1) on the meter using Mini-Whip active antenna.

73

Gary - G4WGT.





2010/6/28 Stefan Schäfer <[email protected]>
Dear group,

Currently there is a very strong (abt 30 dB S/N) drifting carrier that started about 7:30 UTC on abt 12 kHz and is moving now up on 14 kHz. First i thought that it is a local signal but now i saw that it is also visible on the DF6NM VLF grabber with about same strength!

http://www.mydarc.de/df6nm/vlf/vlfgrabber.htm

http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html

Has anyone an idea what it might be? It must be a commercial transmitter due to the signal strength at both locations!

73, Stefan/DK7FC




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