[Fwd: LF: MW]

[Alex Fraser]

Isn't the IF for many AM radios on 455?


Frank Gentges wrote:

> It appears there is some operation around 500 kHz. The Germans have 
> issured a special license for 440 kHz.
> I note that we have some sort of signal at about 453 kHz.  It seems to 
> be a data signal with bursts of data each second.  On the minute, the 
> signal sounds different suggesting less data is sent on the minute.
>
> I don't remember hearing this signal during our LF work.  It is now 
> interfering with the lousy front end in my low tech AM radio at our 
> lab and I have added a front end filter to get rid of it.
>
> Anyone know what this new signal is?
>
> Frank K0BRA
>
> ------------------------------------------------------------------------
>
> Subject:
> LF: MW
> From:
> "Walter Staubach" <walter.staubach at fen-net.de>
> Date:
> Thu, 16 Dec 2004 17:52:13 +0100
> To:
> "RSGB LF" <rsgb_lf_group at blacksheep.org>
>
> To:
> "RSGB LF" <rsgb_lf_group at blacksheep.org>
>
>
> Good News for 2005
> Dear friends,
>         last week I got a permission to operate a MW-transmitter from 
> the German RegTP (Regulierungsbehörde für Telekommunikation und Post). 
> It will be used for studies of progagation and testing modern 
> receiving modes.
> Some data:
> Frequency 440KHz, bandwidth 200Hz, max. 9W ERP
> Call DI2AG (the DI-prefixes are for test and research only, therefore 
> this is no hamradio application).
> Modes A1A, A1B, F1B, G1B. Location JN59NO.
> The permission is valid in 2005.
> The TX will be operated as a beacon, QRSS3 prefered, with a text like 
> "DI2AG JN59NO 1W". This will be repeated in normal CW.
> I would be glad to receive your reports like date / time from - to / 
> report in uV/m or dB below noise or similar / remarks / by e-mail. 
> Screenshots appreciated.
> The QRSS-frequency will be 440.044Khz, I hope there will not be other 
> lines. Please send your mails to walter.staubach at fen-net.de 
> <mailto:walter.staubach at fen-net.de> or dj2lf at darc.de 
> <mailto:dj2lf at darc.de>     I`ll try to get di2ag at fen-net.de 
> <mailto:di2ag at fen-net.de> , too.
> Please prepare your equipment for 440KHz. At 1.1.05   00.01MEZ the big 
> switch will be turned from red to green.
> I´ll keep you informed.
> 73   Walter  DJ2LF
>  
>  
>  
>
>------------------------------------------------------------------------
>
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>


-- 
>>>>>>>>>>>>>>>>----<<<<<<<<<<<<<<<<<
........ Alex Fraser  N3DER .........
......... beatnic at comcast.net .......
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