Hi Gary & LF
Looks like it might get worse as you can see from the rather ominous
quote from Jan's link ...
Quote >> IMO supports the future use of band 415 kHz – 526.5
kHz for safety and security related systems,
recognizing that this band is allocated on a world-wide basis for
the use by the maritime community.
Tony, EI8JK.
On 02/11/2010 11:50, Gary - G4WGT wrote:
Hi John & LF,
The screen shot attached shows an average strength of the 498
to 502kHz signal here in NW England (IO83QO). QSB has an effect
on the signal which continues throughout the darkness periods.
This intrusion into the UK 500kHz band makes reception
difficult.
73,
Gary - G4WGT.
On 1 November 2010 23:37, John P-G <[email protected]>
wrote:
Hello,
I've had some correspondence with John G3WKL and Colin G3PSM
about the
new "commercial" wideband data noise that occupies
498-502kHz
It seems to be a test of an impending data system for marine
use.
Colin would like some information about where, and when, it
can be
heard or otherwise detected. It appears to be being driven
by the
French.
Forthe record I can hear it here in Shetland. It faded up
tonight at
approx 1615 UTC and is audible and visible on a waterfall
display.
I haven't been in a position to DF it, but in the first
instance Colin
would like to gather some information about where it is
being received.
I can collate the information for him if anyone who is
affected by, or
can simply detect, this noise/data signal could give details
either
direct, or via the LF group. I know a lot of discussion has
been had
already, but a quick note now could be useful, as there is a
meeting
soon to discuss this, and other aspects of WRC2012.
Cheers,
John
GM4SLV
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