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Pocket GPS World :: View topic - Has TMC stopped Broadcasting?
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Has TMC stopped Broadcasting?

 
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AndyR
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Joined: May 17, 2004
Posts: 27

PostPosted: Mon Jul 25, 2016 11:27 am    Post subject: Has TMC stopped Broadcasting? Reply with quote

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
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Location: West London

PostPosted: Mon Jul 25, 2016 2:05 pm    Post subject: Reply with quote

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
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PostPosted: Mon Jul 25, 2016 2:23 pm    Post subject: Reply with quote

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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PostPosted: Mon Jul 25, 2016 3:02 pm    Post subject: Reply with quote

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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PostPosted: Mon Jul 25, 2016 3:15 pm    Post subject: Reply with quote

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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Joined: Mar 18, 2011
Posts: 3583
Location: West Sussex

PostPosted: Mon Jul 25, 2016 3:28 pm    Post subject: Reply with quote

Info on Inrix and Garmin here

http://inrix.com/garmin-with-live-inrix-traffic-simpler-quicker-and-without-subscription/
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