GPS issues on GTA02v4

[Daniel Willmann]

This mail is mainly an FYI if some GPS related issues creep in along the
road. My problems are probably caused by poor SMT during the GTA02v4
run.

See also
http://lists.openmoko.org/pipermail/openmoko-devel/2008-February/001981.html
for my problem report earlier.

I first really tested GPS on my 2v4 on the train ride from FOSDEM where
the GPS managed to get a pretty good fix even through the window of the
ICE (the navilock GPS receiver I tried didn't).
A couple days later I was again travelling by train and this time the
Neo wouldn't even acquire the time. When I tried again at home the
result was still the same, no fix, no satellites, no time.
I played around with the connector of the internal GPS antenna,
applying pressure, and the GPS managed to get the time and see some
satellites for a short time, but that was it. After that I wasn't able
to reproduce any positive results with the internal antenna anymore (I
also tried different antennas). Attaching an external antenna worked
however and I was able to get the time in ~20s and a fix in additional
20s so GPS itself still seems to work.

At the moment I'm suspecting that either the phantom voltage for the
internal antenna or the antenna switcher is broken.

Regards,
Daniel Willmann
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