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Sorry if this is a stupid question, but what is the difference with, say, GTM20 (which come with 765T)? Did the FM encoding change or something like that? Is there an URL with their specs?Originally Posted by angelozip
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24th July 2011, 07:55 PM #1Junior Member
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25th July 2011, 03:31 AM #2GPSPower Helper
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Contrary to official information from Garmin that only GTM26 and above would be compatible with Traffic in Brazil, we can find the correct parameters (post 227) and proved that other types of receptors, such as GTM25 and above, also work perfectly. Lower versions have not yet worked, but the next days we will have more certainty from numerous tests. The compatibility issues seem to be connected to the operating system of GTM20/21, who do not read correctly the parameters of the signature.
.Last edited by angelozip; 29th July 2011 at 05:02 AM.
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