I'm not an expert on things 'GPS' however as a Ham radio amateur I can say 
vertical orientation is important, a clear view of the southern sky, correct 
operating voltage, and patience.  Tim R
On Apr 17, 2013, at 3:52 AM, Dan Moses (Home) wrote:

>  In preparation for the NASA SLI launch this Saturday, I had the team turn on 
> their TeleMetrum to simulate the up to 1 hour hold time on the pad.  It has 
> been months since the altimeter has been even turned on.  In general, we 
> could not get any GpS satellites (0).  We left the unit on for the hour and 
> the monitor indicated 3 sats had been found, but no lock (none expected, of 
> course).  We took the altimeter for a walk around the neighborhood in the 
> hopes of avoiding shadowing, but with no improvement. We will try again today 
> in case the local ionosphere LOS was particularly strange yesterday, but that 
> is really grasping at straws.  Can someone point us in the right direction to 
> troubleshoot the problem?
> Dan and the FCHS SLI Team
> Somewhere in the saddle on the way to AL
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