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
[email protected]
[email protected]
