I noticed that carrier too last evening and was wondering about its origin.
Now I remember that it has been reported recently on the list.
As Stefan says,perhaps some IMD2 calculations might help in finding the
culprit.
73
Clemens
DL4RAJ
>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]] On Behalf Of wolf_dl4yhf
>Sent: Sunday, November 04, 2012 1:29 AM
>To: [email protected]
>Subject: Re: LF: OM1II loud
>
>
>
>Am 03.11.2012 22:07, schrieb Stefan Schäfer:
>> Lubos,
>>
>> I can hear OM1II on 472.5 again. But there is the QRM trace which is
>> stronger in the evening. I don't think it is local.
>
>Zigactly. I have that carrier on 472.5 too, since a couple of
>months, but these days it's very audible and annoying. I tried
>to find an ID (modulation sideband) symmetrically around that
>carrier, but didn't find anything related to that frequency.
>
>The SV beacon was sometimes audible here, and even on Joe's frequency
>(504.1 kHz) there was a sometimes audible signal. But
>suspiciously the signal was switched off at 23:00 UTC, so I
>guess it was something else.
>The signal looked like a carrier, some seconds long,
>interrupted at regular intervals by a CW ID (which I couldn't
>read by ear). I have a screenshot of a spectrogram on the
>'portable' computer if anyone is interested.
>
>
>All the best,
> Wolf .
>
>
>
>
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