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Tomtom 920t - RDS-TMC problems.

 
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Saif-Rehman
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Joined: Aug 02, 2010
Posts: 7
Location: Kirkcaldy, Fife. Scotland.

PostPosted: Mon Aug 16, 2010 12:52 am    Post subject: Tomtom 920t - RDS-TMC problems. Reply with quote

Hi,
I recently aquired a Tomtom 920t pretty cheap, however, once connected to Home i found that the satnav had never been updated. It was still running with an old application and v710.1576 map. So after an evening of downloading and everthing was up to date. But on a recent journey i plugged in the traffic aerial and got the message on the screen - "Your RDS-TMC Traffic Receiver cannot be used in conjunction with the current map" And on the main screen i get a grey circle with a red cross through it. (It was working fine albeit slow and using an old map prior to downloading new info)

Can anyone shed any light on what has happened.

The RDS-TMC is version no: 4V00.083

Many thanks.
_________________
Tomtom 920t
App 8.351 (9982/090518) OS:315187
Europe_West v850.2781
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dhn
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Joined: Oct 08, 2007
Posts: 2544
Location: Toronto CANADA

PostPosted: Mon Aug 16, 2010 12:54 am    Post subject: Reply with quote

Where did you get the 920 from? And what map have you just updated?
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David
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Saif-Rehman
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Joined: Aug 02, 2010
Posts: 7
Location: Kirkcaldy, Fife. Scotland.

PostPosted: Mon Aug 16, 2010 12:57 am    Post subject: Reply with quote

Hi David,

Wow quick reply.....

I bought it cheap on ebay (if you want i will let you know the item number) and i managed to update the Europe-West map along with the USA map.
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dhn
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Joined: Oct 08, 2007
Posts: 2544
Location: Toronto CANADA

PostPosted: Mon Aug 16, 2010 2:13 am    Post subject: Reply with quote

The problem is the rds-tmc antenna that works in North America and on North American maps (with app 8.351) is NOT compatible with the European model that (obviously) only works with the Western_Europe maps.

If you switch maps to NA, does it give the error?
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David
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Saif-Rehman
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Joined: Aug 02, 2010
Posts: 7
Location: Kirkcaldy, Fife. Scotland.

PostPosted: Mon Aug 16, 2010 2:34 am    Post subject: Reply with quote

Yep, it works with the American maps, after trailing through this forum i have concluded that the RDS-TMS receiver is indeed for the american market and what i require is 4v00.013 (european) and not 4v00.083 (america) as what came with the device.

Can anyone confirm please and if so is there anyone here selling the 4v00.013 version.

Thanks
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Guivre46
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Joined: Apr 14, 2010
Posts: 1262
Location: West London

PostPosted: Mon Aug 16, 2010 9:58 am    Post subject: Reply with quote

v8.351 works with the rds-tmc receiver with the usb connection, it is amplified by connecting to the car charger then to the device. The part number is in my signature. There can be confusion when ordering as the part number on the box refers to the actual box not the contents. I bought from a picture on amazon who redirected my order to a German seller.
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Mike R [aka Wyvern46]
Go 530T - unsupported
Go550 Live [not renewed]
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Saif-Rehman
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Joined: Aug 02, 2010
Posts: 7
Location: Kirkcaldy, Fife. Scotland.

PostPosted: Mon Aug 16, 2010 3:23 pm    Post subject: Reply with quote

Guivre46 wrote:
v8.351 works with the rds-tmc receiver with the usb connection, it is amplified by connecting to the car charger then to the device. The part number is in my signature. There can be confusion when ordering as the part number on the box refers to the actual box not the contents. I bought from a picture on amazon who redirected my order to a German seller.


Thank you
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caravanj
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Joined: Nov 01, 2004
Posts: 72

PostPosted: Sat Aug 21, 2010 9:20 am    Post subject: 720 Traffic RDS Reply with quote

I've got the same problem with a UK bought 720 so it's nothing to do with foreign imports.
It worked ok with Western Europe maps but the last update wouldn't fit onto my 720 ( not enough space) so I installed the Europe Northern map & that's when the RDS stopped working.
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mikealder
Pocket GPS Moderator
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Joined: Jan 14, 2005
Posts: 19638
Location: Blackpool , Lancs

PostPosted: Sat Aug 21, 2010 9:50 am    Post subject: Reply with quote

Can you have a look in your Northern Europe map folder using Windows Explorer locate the following files and can you report back what file size they are:

tmccodes.dat
traffic.dat


It has been knows for these to be sized at zero Kb on some updates thus rendering the RDS system useless, if they are zero it should be fairly easy to resolve - Mike
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Saif-Rehman
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Joined: Aug 02, 2010
Posts: 7
Location: Kirkcaldy, Fife. Scotland.

PostPosted: Sat Aug 21, 2010 7:17 pm    Post subject: Reply with quote

mikealder wrote:
Can you have a look in your Northern Europe map folder using Windows Explorer locate the following files and can you report back what file size they are:

tmccodes.dat
traffic.dat


It has been knows for these to be sized at zero Kb on some updates thus rendering the RDS system useless, if they are zero it should be fairly easy to resolve - Mike


Mike,

The same happened to me after an update from Western Europe map to the current map installed.

In my Europe_West map folder the:

tmccodes icon shows 3.72MB &
traffic 75bytes

Thanks
_________________
Tomtom 920t
App 8.351 (9982/090518) OS:315187
Europe_West v850.2781
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caravanj
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Joined: Nov 01, 2004
Posts: 72

PostPosted: Sat Aug 21, 2010 10:42 pm    Post subject: Reply with quote

Hi Mike,
I've now installed the latest Western Europe map onto an SD card & the files are as follows:
tmccodes.dat = 6.38MB

traffic.dat = 90bytes

The RDS doesn't work with this update either!!
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