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LF: Field strength of commercial LF stations

To: "LF-Group" <[email protected]>
Subject: LF: Field strength of commercial LF stations
From: "Dick Rollema" <[email protected]>
Date: Sat, 11 Aug 2001 16:27:47 +0200
Cc: "J. Kroon, PA0IF" <[email protected]>, "Klaas Robers, PA0KLS" <[email protected]>, "Koos Fockens, PA0KDF" <[email protected]>, "Jan Harte, PA0HRT" <[email protected]>, "Jan Ottens, PA0SSB" <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
To All from PA0SE
 
I have measured the field strength of some commercial LF stations in my shack, using the untuned single turn loop method.
 
MSF                60 kHz        1.95mV/m  
 
Rugby           73.25 kHz   1.35mV/m
 
DCF 77          77.5kHz      2.54mV/m
 
Mainflingen 128.93kHz   3.62mV/m 
 
DCF139        138.83kHz   2.02mV/m
 
The transmitter at Mainflingen (near Frankfurt) radiates a similar signal, or perhaps the same one, as DCF139: a carrier with a burst of data in FSK at irregular intervals.
 
73, Dick, PA0SE
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