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AndyR
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Joined: May 17, 2004
Posts: 27
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 Posted: Mon Jul 25, 2016 11:27 am Post subject: Has TMC stopped Broadcasting? |
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Im located in the southwest (Devon) and up until about 3 weeks ago, TMC was working a treat. In fact the information contained in the TMC data about traffic issues and speed had been improving.
However over the last 3 weeks, the TMC signal is present but no data being transmitted. My Merc has not received any traffic messages. A friedn with a pioneer unit has received maybe one or two, but this has been for incidents on the M25 - hardly local!
Anyone have any ideas as to what is going on? I can not find anything on the internet. |
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Kremmen
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Joined: Mar 03, 2006
Posts: 7141
Location: Reading
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| Posted: Mon Jul 25, 2016 2:05 pm Post subject: |
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All you need to stuff TMC is your local or strongest 'provider' to have an issue.
I suffered the same some years ago when Eagle radio in Surrey went up the pictures for a while.
I had no TMC till I got near Heathrow then Capital Radio took over as the strongest signal and it all jumped back into life.
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AndyR
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Joined: May 17, 2004
Posts: 27
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| Posted: Mon Jul 25, 2016 2:23 pm Post subject: |
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| Kremmen wrote: | All you need to stuff TMC is your local or strongest 'provider' to have an issue.
I suffered the same some years ago when Eagle radio in Surrey went up the pictures for a while.
I had no TMC till I got near Heathrow then Capital Radio took over as the strongest signal and it all jumped back into life. |
In the case of INRIX (was ITIS) i believe they use classic FM which is broadcasting fine..... |
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Kremmen
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Joined: Mar 03, 2006
Posts: 7141
Location: Reading
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| Posted: Mon Jul 25, 2016 3:02 pm Post subject: |
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TMC and Inrix are totally different animals.
Inrix is digital DAB transmissions wheras, as you say, TMC is FM based.
TMC comes from a nationwide network of FM radio stations with ClassicFM being the most common.
I've never investigated where Inrix DAB comes from.
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AndyR
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Joined: May 17, 2004
Posts: 27
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| Posted: Mon Jul 25, 2016 3:15 pm Post subject: |
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inrix acquired ITIS in 2011 http://inrix.com/press/2687/
If inrix did not continue to transmit ITIS TMC over classic FM, who did?
My understanding was that there were 2 TMC sources, ITIS and Trafficmaster(who have been acquired by teletrac) and broadcast over local radio stations rather than Classic FM. |
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sussamb
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