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Message-ID: <3.0.6.32.19990412110832.007b3620@mail.dlc.fi>
Date: Mon, 12 Apr 1999 11:08:32 +0300
To: rsgb_lf_group@blacksheep.org
From: =?iso-8859-1?Q?V=E4in=F6_Lehtoranta?= <vaiski@dlc.fi>
Subject: Re: AW: LF: DBF39 off-air
In-reply-to: <205F4B3C4BCED21184C7006097630A8A069247@nmex01nt.hsd.utc.com>
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Mille grazie caro Gamal per informazione!

That is very very useful for me as I intend to
analyze the field strength measuring data produced
at the Jokela Measuring station.
I'm retired propagation researcher and pilot and
dont' have DL QTC available at the moment but
I'm a member of RSGB and send monthly propagation
info for PSC (Propagation studies Committee)
Have been measuring LF stations for 35 years and
we monitor Aeronautical and Maritime beacons etc.
Can you hear Datatrak stations around 132 & 145 kHz?

All the best, Ciao                   de Vaino


At 09:46 12.4.1999 +0100, you wrote:
>Hello Vaino, OH2LX
>
>	OH2LX> Hello folks, I'm a newcomer to this mailing list,
>
>	Welcome here.
>
>	OH2LX>  Incidentally measured frequencies of DCF39/49 
>	OH2LX> yesterday.  DCF77 (77.5) and DCF39 (138.83/139.17)
>	OH2LX> are continuously Fs recorded here at our Monitoring 
>	OH2LX> Station (qth: Jokela, 60N34 25E00), that's for LF 
>	OH2LX> propagation studies.
>
>	Good idea ! Have done this in Nov-Jan and observed some
>	interesting pattern, loosely related with geomagnetic
>	index. Should you be interested please let me know.
>
>	OH2LX> Qth of the latter is Burg, perhaps that is why somebody
>	OH2LX>  may call it DBF39. 
>
>	The perhaps first usage of "DBF39" I found in an article from 
>	Walter Staubach, DJ2LF in german magazine 
>	CQ-DL May 1998 page 372.
>
>
>	OH2LX>  Qth of DCF49 probably Mainflingen?
>	  
>	Some collected data for mentioned stations:
>
>	==========================================
>	Station DCF39
>	==========================================
>	nominal frequency		139.000 kHz
>	modulation: ASCII (8E1) 200 baud FSK 340Hz shift
>	mark_frequency			138.830 kHz
>	space_frequency			139.170 kHz
>	-------------------------------------------
>	latitude			52N55   *)
>	longitude			10E18   *)
>	locator				JO52XH  *)
>	located at Burg near Magdeburg
>	*) = accurate to 10km
>	-------------------------------------------
>	user (remote control service):
>	EFR - Europaeische Funk-Rundsteuerung GmbH
>	Wilhelm von Siemens Strasse 2-10
>	D-12277	Berlin
>	Germany
>	phone	+49-30-2671-7055
>	fax	+49-30-2671-7832
>
>	operator:
>	Deutsche Telekom AG
>
>
>
>
>	There are 6 antennas on this site:
>
>
>	(1) 210m vertical monopole
>	This is a guyed isolated tubular mast
>	used for transmissions of DCF39/DBF39
>	powered by 
>	Telsa Transmitter 
>	which is designed for nominal 200kW
>	but presently operated with 50kW HFout
>
>	(2) 210m vertical monopole
>	This is a guyed isolated tubular mast
>	presently unused
>	formerly used for MW transmissions
>
>	(3) 324m vertical biconical antenna
>	This is a hexafilar wire antenna
>	supported by fabric mast
>	used for BC transmissions of
>	"Radioropa Info" on 261kHz
>	powered by 
>	Telefunken Transmitter 
>	which is a MOSFET amp providing
>	50kW HFout
>
>	(4) triple, 70m octofilar horizontal dipole 
>	presently unused
>	formerly used for MW transmissions
>	(1575kHz Radio Berlin Intenational)
>
>	(5) 55m trideco antenna 
>	presently unused
>	formerly used for MW transmissions as backup antenna
>
>	(6) 55m trideco antenna 
>	presently unused
>	formerly used for MW transmissions as backup antenna
>	==========================================
>
>
>	==========================================
>	Station DCF49
>	==========================================
>	nominal frequency		129.100 kHz
>	modulation: ASCII (8E1) 200 baud FSK 340Hz shift
>	mark_frequency			128.930 kHz
>	space_frequency			129.270 kHz
>	-------------------------------------------
>	latitude			50N00
>	longitude			08E49
>	locator				JO40VA
>	located at Mainflingen near Frankfurt
>
>	user (remote control service):
>	EFR - Europaeische Funk-Rundsteuerung GmbH
>	Wilhelm von Siemens Strasse 2-10
>	D-12277	Berlin
>	Germany
>	phone	+49-30-2671-7055
>	fax	+49-30-2671-7832
>
>	operator:
>	Deutsche Telekom AG
>
>	==========================================
>	Station DCF42
>	==========================================
>	carrier frequency		122.50 kHz
>	start of modulation		122.50 kHz
>	maximum of modulation		123.70 kHz
>	end of modulation		124.90 kHz
>	---------------------------------------------------------
>	latitude			50N00
>	longitude			08E49
>	locator				JO40VA
>	located at Mainflingen near Frankfurt
>
>	Broadcast of Differential GPS Data
>	ALF=Accurate positioning by Low Frequency
>	modulation: Single Sideband PSK
>
>	operator:
>	Deutsche Telekom AG
>	==========================================
>
>	==========================================
>	Station DCF77
>	==========================================
>	carrier frequency		77.50 kHz
>	--------------------------------------------
>	latitude			50N00
>	longitude			08E49
>	locator				JO40VA
>	located at Mainflingen near Frankfurt
>
>	Broadcast of standard time and frequency
>
>	user:
>	Physikalisch-Technische Bundesanstalt
>	Labor fuer Zeiteinheit
>	Bundesallee 100
>	D-38116 Braunschweig
>	Germany
>
>	operator:
>	Deutsche Telekom AG
>	==========================================
>
>
>	Best 73 
>
>	Gamal Soegiono (SWL)
>
>	50N01 / 08E27 / JO 40 fa
>	soegiono@nm.hsd.utc.com
>	soegiono@nmex01nt.hsd.utc.com
>
>
----------------------------------------------------------
V.K.Lehtoranta, OH2LX, POBox 50, FIN-05401 Jokela, Finland
------ Tel: +358-9-4173965 ---- Fax: +358-9-4173961 ------
E-mail: vaiski@dlc.fi - alias: oh2lx@dlc.fi & oh2lx@sral.fi