Bluetooth GPS - Very Poor Performance!?
Is it just me/my hardware or is GPS over Bluetooth absolutely rubbish!?
I tried a Holux GR-230 unit first but had the usual problems in getting it connected. When I finally did, I was apalled by it's performance, usually failing to get a gps lock at all.
So I ditched it in favour of a Rikaline GPS-6031-X7. It picked up far mor signals and usually obtained a lock almost instantly. However, it's accuracy is very disappointing. Positional accuracy - it's usually ok on a motorway or dual carriageway but at slower speeds, it jumps all over the place, forwards, backwards, in the middle of fields hundreds of yards away - and that's the worst time for it to happen 'cos it's when you slow down for a junction that you actually need it. The second issue is directional accuracy - it often shows me driving sideways as it's so sloooooow to update/recalc the direction.
If this was my first experience of gps, I might be able to forgive it without a benchmark to judge it against. But I've used Navman with an iPaq, a LAM1 unit with my Nokia 9210 and a (cheap) CF device with my Dell Axim and they all performed far, far better! I know that TomTom Navigator 2 isn't the problem as it performed flawlessly on my Axim (PXA255).
So what's going wrong? Is it the bluetooth devices, or the bluetooth technology, or the XDA II? Will O2's bluetooth update improve matters?
I can no longer rely on this and I'm going to have to start taking map backups - something I've never had to do before and really defeats the object.
Any thoughts, experiences, comments, answers?????