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Message-ID: <3.0.6.32.19990409191549.007c26e0@mail.dlc.fi>
Date: Fri, 09 Apr 1999 19:15:49 +0300
To: rsgb_lf_group@blacksheep.org
From: =?iso-8859-1?Q?V=E4in=F6_Lehtoranta?= <vaiski@dlc.fi>
Subject: Re: LF: DBF39 off-air
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Hello folks, I'm a newcomer to this mailing list,

Incidentally measured frequencies of DCF39/49 yesterday.
DCF77 (77.5) and DCF39 (138.83/139.17) are continuously
Fs recorded here at our Monitoring Station (qth: Jokela,
60N34 25E00), that's for LF propagation studies.

Qth of the latter is Burg, perhaps that is why somebody
may call it DBF39. Qth of DCF49 probably Mainflingen?

Cheerio                   de Vaino, OH2LX
IARU Region 1 Auroral Studies Coorninator

PS  Just reading article by PA0SE on RadCom, very nice...


At 12:49 9.4.1999 +0100, you wrote:
>Hello Dick, PA0SE and all
>
>
>GS> BTW: Is there anybody capable of
>GS> decoding the emission of DBF39 ??
>
>DR> So even if you were able to decode the 
>DR> messages they would probably make no sense.
>
>Yes and No.
>
>By vewing the demodulated audio in 
>SSB mode on the scope, I can discern
>different message lengths, short messages 
>and long messages.
>
>Long messages appearing most frequently,
>short messages appear with relatively
>large repetition times.
>
>As all radio stations have to identify
>themselves from time to time, I would expect
>that short messages _might_ contain the
>station ID where long messages obviously
>contain the mentioned remote control commands.
>
>So I do not care about the remote control 
>commands, but intend to "see" the station ID.
>
>Some OMs refer the station to as DBF39
>others refer to it as DCF39.
>
>End of last year I spoke with a technician 
>at EFR (the company using a.m. LF station
>for their remote control service). He informed 
>me, that DCF39 is still used to identify the 
>station. By displaying the ASCII messages I would 
>like to confirm that this is actually the
>case. 
>
>Best 73
>
>Gamal Soegiono (SWL)
>
>50N01 / 08E27 / JO 40 fa
>soegiono@nm.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