85.945 mhz or there a bouts

Scanning radio frequencies for the North East
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jono110
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85.945 mhz or there a bouts

Post by jono110 » 20 Aug 2014, 10:16

Hi could any of you lovely people tell me what data noise that is on 85.945mhz. In the Ofcom allocation table states Radio astronomy. Is this true of this noise

Kind Regards

Jono

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timbo
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Re: 85.945 mhz or there a bouts

Post by timbo » 01 Sep 2014, 10:25

Radio Astronomy is more of a "listening to space" thing. Unless you're picking up a message from another world ! But chances are it's Taxi data leaking up from PMR Low Band. Might also be worth checking it's not local interference, like an ethernet router, they put noise out all over the place.

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Minus1
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Re: 85.945 mhz or there a bouts

Post by Minus1 » 01 Sep 2014, 11:50

85.945 is NOT in a radio astronomy band.

This is what you should be looking at:
http://stakeholders.ofcom.org.uk/spectr ... on/uk-fat/
Page UK 38

The footnote "UK10" against Radio Astronomy refers to Annex D.
Annex D refers to 80·5 - 82·5 MHz used for "Scintillation studies and mapping radio sources".
Nothing to do with 85.945

85.945 is in the Business Low Band — Mentioned in annex K
"85.0125 MHz to 86.7 MHz paired with 71.5125 MHz to 72.7875 MHz"

And it won't be 85.945, the band has 12.5 kHz channeling, not 5kHz, so it will be 85.9375 or 85.95
Look in the WTR to find out what it is
http://spectruminfo.ofcom.org.uk/spectrumInfo/licences
KEY : = channel/stud | ~ = CTCSS/DCS | ^ = transmitter site | ¯ = overhead | * = trunked

jono110
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Re: 85.945 mhz or there a bouts

Post by jono110 » 07 Sep 2014, 15:29

Thanks Minus,

I had a look at the frequency and i am not sure if was meant to be down there, It was a taxi company MDT. Only found this out by mistake as the decoder i used i left on and it started to decode the noise.

Thank you again

Jono

jono110
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Re: 85.945 mhz or there a bouts

Post by jono110 » 07 Sep 2014, 15:35

and of course limbo was on the money :)

marc85
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Re: 85.945 mhz or there a bouts

Post by marc85 » 07 Sep 2014, 19:50

i get that from st helens 85.950 is the exact frequency but i recieve the voice not data noises it seems a taxi company from towards wigan way. cant work out exact location. knowsley black cabs also operate on 86.000

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