Thread: About 37xx converted to 34xx satellites reception accuracy

Originally Posted by Neil

....... WAAS is used as an acronym internationally, and ..... I think it's more correctly called SBAS (Space/Satellite Based Augmentation System) internationally and I also think it's normally enabled by default in most modern units ......
This is just another 'hypothesis' of mine. Ready to be shot down in flames by the Software Experts ......

Originally Posted by voyager56

........... In new models there is no such feature like turning on/off WAAS/EGNOS. Maybe because now WAAS/EGNOS is widely available.......

Originally Posted by angelozip

....... I don't believe that the WAAS has direct link with mentioned problems. These models do not have WAAS / EGNOS available possibly because your level of accuracy is more than needed for civilian and road use (good hardware and sophisticated algorithms correction). I hope to have time in the next days to do some experiments, nothing like practical and methodical testing to confirm, whether or not, our views and hypotheses ..

Originally Posted by voyager56

I think the latest models are able to decide to use not WAAS/EGNOS. So there is no need to have an option selectable by user.

Which is it guys? I was guessing that WAAS is enabled by default in modern units and not de-selectable.
Voyager thinks latest models are smart enough to decide whether to use it or not, so in that sense it's not user selectable/de-selectable.
Angelo is stating that these models don't use WAAS because it's not available to them.

Which is it, definitively? WAAS capable, or not? If they don't use WAAS at all obviously the problem is elsewhere.

In one sense, i believe this is a 'storm in a teacup' because accuracies up to 15m really are acceptable for civilian road navigation. We are wanting 3-4 metre accuracy. ILS systems for precision aircraft approaches require 4 metres or less. That sort of puts it in perspective. It means converted units like mine, voyages and caty's getting 3-10m are quite acceptable. But ppl getting 15-20m need a solution imo.