I have tested the SirfIV performance of GH-625XT, it is amazing!
It gets fix soon and no effect even in close the building.
We will plan to recruit tester to involove testing.
Geoffrey please tell us more!!
How fast GPS connection on a cold and warm start? What about the ephemeris data prediction: does the hot start period is really that extended? (I think they spoke about few days to one week if I recall correctly)
Can you feel the difference with the new energy management?
And have you tried it downtown Taipei?
Yes, firstly, I cold start two devices: GH-625 and GH-625XT under weak signal environment (around 10-20dB signal strength).
XT got fix below 40sec but 625 no signal with few blank bar.
SirFIV has been built in prediction of emphersis, if the device got 3Dfix before, and then go to obstruction area to power on to acquire signal, it just needs to capture one satellite and then expand the others automatically to get 3D fix through prediction.
Of course, power management is superior!