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Nigel42 Occasional Visitor

Joined: Jan 05, 2007 Posts: 51
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Posted: Tue Jul 15, 2008 2:06 pm Post subject: RDS-TMC in USA |
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Hi
Just brought a new RDS-TMC to use in the USA (florida) only to find that "it is not compatable in this area" This is the message i get when connecting to my 720.
I've checked the box and the instructions and there is nothing about not working in the states!!
Or is it something to do with my unit. !
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falkirk81 Pocket GPS Verifier


Joined: Jul 07, 2006 Posts: 1651 Location: Newcastle, England, UK
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Posted: Tue Jul 15, 2008 6:50 pm Post subject: |
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Yes the USA tmc cable does not work in europe and the europe tmc cable does not work in the USA. This is due to the differences in the systems used. The USA system uses an annual fee based system for the tmc service, the europeans have a fee based and a free system. Although in the UK currently only the free based system. _________________ Tomtom GO 1005 LIVE
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Kar98 Lifetime Member

Joined: Nov 25, 2004 Posts: 344 Location: DFW, Texas, USA
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Posted: Thu Jul 17, 2008 10:43 pm Post subject: |
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Well, I'm waiting for a RDS-TMC module to arrive on my doorstep to test all that. So...this is not a bookmark ;) |
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falkirk81 Pocket GPS Verifier


Joined: Jul 07, 2006 Posts: 1651 Location: Newcastle, England, UK
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Posted: Thu Jul 17, 2008 10:46 pm Post subject: |
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Well i see you are in the US, so when your new one arrives, it will work for 12 months but then require a subscription of about $60 a year for the traffic service in the USA. _________________ Tomtom GO 1005 LIVE
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Kar98 Lifetime Member

Joined: Nov 25, 2004 Posts: 344 Location: DFW, Texas, USA
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Posted: Thu Jul 17, 2008 10:59 pm Post subject: |
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Well, according to this coverage map, $60 would be quite overpriced:

Last edited by Kar98 on Thu Jul 24, 2008 6:27 pm; edited 1 time in total |
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falkirk81 Pocket GPS Verifier


Joined: Jul 07, 2006 Posts: 1651 Location: Newcastle, England, UK
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Posted: Thu Jul 17, 2008 11:02 pm Post subject: |
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Yes the coverage is poor in certain areas. I would be careful of getting the system if i was not near a transmitter listed on that pic. _________________ Tomtom GO 1005 LIVE
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Kar98 Lifetime Member

Joined: Nov 25, 2004 Posts: 344 Location: DFW, Texas, USA
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Posted: Thu Jul 17, 2008 11:11 pm Post subject: |
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Well, traffic around here is pretty predictable, as in, never a problem. But I'm sure as hell not going to pay $60/yr for the few times a year that I'm actually going near one of the red dots ;) |
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vinniet Occasional Visitor

Joined: Jun 02, 2005 Posts: 29
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Posted: Fri Jul 18, 2008 12:56 am Post subject: |
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I thought the transmitter was a one-time fee for the cable and you did not have to pay again. I mean how can they know you are using it, it only receives signals from FM. |
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mikealder Pocket GPS Moderator


Joined: Jan 14, 2005 Posts: 19638 Location: Blackpool , Lancs
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Posted: Fri Jul 18, 2008 8:57 am Post subject: |
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vinniet wrote: | I thought the transmitter was a one-time fee for the cable and you did not have to pay again | This is true for the UK, but the US unit does require a 12 month subscription, they can quite simply alter the code being transmitted to the device, or simply disable the RDS once 12 months is up in software - Mike |
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andyjdhurley Occasional Visitor

Joined: Jul 15, 2008 Posts: 8
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Posted: Fri Jul 18, 2008 10:37 am Post subject: |
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mikealder wrote: | vinniet wrote: | I thought the transmitter was a one-time fee for the cable and you did not have to pay again | This is true for the UK, but the US unit does require a 12 month subscription, they can quite simply alter the code being transmitted to the device, or simply disable the RDS once 12 months is up in software - Mike |
It's probably done a bit like subscription TV, i.e. the data stream is encrypted and gets decrypted by a key in your receiver. The keys probably change once a month or so and if you don't get sent the new key it stops working. |
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lbendlin Pocket GPS Staff


Joined: 02/11/2002 22:41:59 Posts: 11878 Location: Massachusetts, USA
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Posted: Fri Jul 18, 2008 12:49 pm Post subject: |
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yes, the TomTom software will alert you that your "ClearChannel subscription" will be about to expire in x days, and after that the receiver won't get any more messages. I have no idea how they re-enable it though if you decide to cough up. _________________ Lutz
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