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LF: Re DDH48

To: [email protected]
Subject: LF: Re DDH48
From: [email protected]
Date: Fri, 4 May 2001 09:53:59 EDT
Reply-to: [email protected]
Sender: <[email protected]>
Hi Uwe, Alan,

Alan's hint about the IMP freqs fits neatly, including the FSK shift:
2*(147.3[+-42Hz]) - 138.83 = 155.77[+-85] , 147.3[+-42] + 128.93 - 138.83 = 137.4 [+-42] .
In this case, you should also be able to notice DCF's tell-tale modulation
bursts on the IMPs.
I don't see any of these IMPs at my QTH. Perhaps there is some "rusty-nail"
type of nonlinearity, generating intermodulation locally. Can you DF it with
your loop? Or use a portable LW radio, tuned to Deutschlandfunk's USB above
153 kHz?
73 es good luck
de Markus, DF6NM

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