From: "jannsen" <0482183881-0001@t-online.de>
To: rsgb_lf_group@blacksheep.org
References: <5.1.0.14.0.20020706110149.00a08b40@POP3.freeler.nl>
Subject: Re: LF: Luxemburg effect?
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Date: Sat, 6 Jul 2002 23:36:04 +0200
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Dick Rollema schrieb:
> To All from PA0SE
>
> Already several days I suffer from terrible broadcast QRM on the LF-band. 
> It sounds like Luxemburg effect centered on DC39.
> It is so bad that this morning I could hardly read M0BMU on 137.4kHz where 
> I tried to measure his field strength and reporting back with my 1944 
> Hellschreiber. Jim always has a strong signal, about S8, and the test 
> failed completely due to the BC-QRM.
> I experience it on both the Teletron LWF45 LF receiver and the W & G SPM-12 
> selective level meter I used for the measurement.
> The LWF45 has excellent front-end selectivity (5 tuned circuits tracking 
> the local oscillator) so it can't be cross- or intermodulation  by a strong 
> BC-signal.
>
> The only other cause I can think of is some "rusty bolt" effect that has 
> recently developed.
>
> Do others have the same problem?
>
> 73, Dick, PA0SE

Hi Dick,

in the northern part of DL nothing. on 137.4kHz is DCF48 with an unintended 
radiation ZOA. if taking DCF39 in zero beat I can hear the BC 
station Deutschlandfunk (153kHz, Braunschweig) loud and clear.

regards

Uwe/dj8wx