Re: Intruder on 7089?

In message <pG+qS9EdnEVKFweB@xxxxxxxxxxxxxxxxx>, Ian Jackson
<ianREMOVETHISjackson@xxxxxxxxxxxxxxxxx> writes
In message <B-OdnR8MTtsI2snXnZ2dnUVZ8jKdnZ2d@xxxxxx>,
Smolley <jon_1940@xxxxxxxxxxx> writes

"Chris Street" <ng@xxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:KcO4m.21379$FP6.4968@xxxxxxxxxxxxxxxx
Ian Jackson wrote:
In message <h3070l$hm8$2@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Yeti
<yeti@xxxxxxxxxxxx> writes
Ian Jackson wrote:
There's been a strong 'RTTY-type' on all day on appx 7089kHz. It has
been transmitting continuously, so it won't be amateur. Does anyone
have any idea what it is?

Wasn't this mentioned before - some sort of airborne military data
system?

That was a digital thing on 80m. This is RTTY/PSK or something like that.
I reckon that it must be relatively local (within 300 miles) and,
whatever it is, it should not be there.

Heard the same thing about 4 weeks back myself. Before I could get it
recorded for a later decode it finshed. As I recall it was a continuous
carrier centered on something like 7090 which jumped up and down by about
110Hz. Was pretty strong in West Yorkshire.


I suspect aliens transmitting FSK to an old Creed teleprinter.

Well, they're still there this morning, at a pretty steady S9+ (S
Bucks). I think the RSGB intruder watch needs to know.

Thanks for the info., I have just had a look at the signal
which is a 75 Baud, 200 Hz shift RTTY signal centred on 7088.0 kHz. The
signal is synchronous and encrypted, as distinct from traditional
amateur and commercial asynchronous signals which are meant for general
reception; don't waste your time on trying to read this one! This is
typical of Russian military RTTY signals which appear all over HF,
particularly on frequencies allocated to other services.

The Russians are just about unique in their complete disregard
for other HF users by their military and have been known to park their
transmissions on safety of life frequencies for hours at a time. No
chance of moving this one, it will probably QSY after a couple of days
when the propagation changes.

Regards,
Chris Cummings G4BOH

Co-ordinator

RSGB Intruder Watch
--
Chris Cummings
.

Loading