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Dexter,
Jean-Pierres wideband recording above 128 kHz
contains all three telecontrol carriers (DCF49 128.93, HGA22 135.43, DCF39
138.83 kHz idle), with DCF49 being the most audible one. The one you
heard above 136.9 was most likely DCF39 - they sound perfectly alike as
the FSK telegram formats are very similar.
73, Markus
Sent: Sunday, November 28, 2010 8:43 PM
Subject: Re: LF: T/A [137kHz] Grabber noisy !
Jean-Pierre Méré (F1AFJ) wrote:
> Hi
Roelof ,
> I think that my QRM is local (perhaps CPL) I made capture and
an audio
> recording, you can download it here:
> http://jpmere.online.fr/LF/QRM_137kHz/
The
data burst I hear about the middle your recording I was also hearing
here in
North Carolina last evening while monitoring 136.9
kHz.
Dex
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