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data on 49.450

PostPosted: Fri Feb 23, 2018 5:58 pm
by jimgb17
Hi all i was wondering what this data sound is and if it can be decoded?
I have recorded this via sdr#
https://soundcloud.com/user-545528533/recording

Re: data on 49.450

PostPosted: Fri Feb 23, 2018 6:12 pm
by jimgb17
Also Just heard other data noises some are verry strong 60db+

heard is a strong signal i heard on 49.075

https://soundcloud.com/user-545528533/radio-data-on-49025

Re: data on 49.450

PostPosted: Fri Feb 23, 2018 7:15 pm
by thelad
Think its a pager.

Re: data on 49.450

PostPosted: Fri Feb 23, 2018 7:17 pm
by G4RMT
First one is an old fashioned pager, and the second probably a digital version - not so sure on the type. However, loads of devices using digital streams use that band - even remote control devices like model aircraft and stuff.

Re: data on 49.450

PostPosted: Fri Feb 23, 2018 9:42 pm
by m0lsx
Lots of frequencies in that area are using the Simple Site licence. So a few £'s per 5 years for a site only licence.

Re: data on 49.450

PostPosted: Sat Feb 24, 2018 10:38 pm
by AndrewIrvine
The pager I use in the care home uses that, it's just a data burst from the button box pressed by the person needing help, picked up by a relay in the duty room which fires the signal back out with more power.

Re: data on 49.450

PostPosted: Sat Feb 24, 2018 10:55 pm
by jimgb17
Its a Local Hospital Pager on 49.450
I hard voice on it tonight saying report to resus its a verry srong signal...
Thanks again :smiles:

Re: data on 49.450

PostPosted: Sun Apr 29, 2018 12:01 pm
by aRBemo
It is a pocsag/flex pager, they are still used as in rural areas as mobile reception is not reliable enough. I decode these on my NooElec NESDR Smart and you can witness data from all over the UK, there are about 10 frequencies in use on 136-154Mhz (18 channels) and 454-470Mhz (8 channels). I have details for both Windows and Linux decoders if interested.