Tomtom BT GPS - WAAS?

octopus · Occasional Visitor Joined: Sep 17, 2003 Posts: 2

I cant find this anywhere - may be a silly question, but does the Tomtom support WAAS / ECONOS?

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lbendlin · Posted: Wed Sep 17, 2003 2:50 pm Post subject:

Given that the chipset is SIRF IIe/LP I would assume that it does support WAAS and you could switch it on/off with the Emtac Crux_view application. Anyone can confirm this?
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DavidW · Posted: Wed Sep 17, 2003 5:02 pm Post subject:

Crux View could well fail to configure the TomTom Bluetooth GPS - at least some configuration on Emtac units doesn't use standard SiRF configuration commands.

Apparently the TomTom Bluetooth GPS does not support SBAS (WAAS and EGNOS) - the explanation I've seen is "memory optimisation concerns", which doesn't make a whole lot of sense to me unless they're running non-standard firmware on the SiRFstar IIe/LP chipset for some reason. I don't have a GPS to test this with, however.

As an aside, the information I have is that the Navman 4400 doesn't support SBAS either, at least not in the default configuration. Apparently, part of the reason the 4400's battery life figures are so good is that it by default uses the "adaptive trickle" mode in 2.30 and upwards SiRF firmware - and that is incompatible with SBAS. Again, I haven't got a GPS to test this with.

David

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