[TG] Axiom Pro internal GPS loss of lock

[BernieK]

As I mentioned in this thread http://forum.raymarine.com/showthread.php?tid=9665 I had suspicions that this problem was caused by loss of GPS data. It was not.

However, I have experience on a few occasions what appears to be loss of GPS lock.

A couple of days ago I experienced one of these and the only reason I knew because my autopilot gave a track error.

I stopped immediately and looked at the satellite display. It showed all satellites in orange (there were at least 20 showing).

The GPS locked again in perhaps 30 seconds. Most of the satellites on the screen except the very fringe turned green. The fringe ones took perhaps another minute.
It was a clear sky. I was in open water with no boats around, with perhaps 8knots of wind. The HDOP usually sits at 0.7.
It was as if the MFD had lost communication with the GPS. I don't think the GPS had to reacquire, though it could have.

The signal strength for each satellite when functioning on the satellite display varies from .42 to .21 (on the fringe).

Is this signal level reasonable?