iFly GPS Forum

I had a similar issue recently on a return trip from KAUS to KTKI. I was told it had to do with the recent rash of solar flares we've had and that they were interfering with GPS signals. The fact that your Garmin was working and the iFly was not is odd unless it is not as susceptible to flares as the iFly.

There is no one answer as to why the iFly had trouble getting a lock. Some possible reasons are:

• External or internal interference
• You are in a GPS Satellite Shadow
• The "Almanac" (a database that contains info on the GPS network of satellites) is out of date. This can happen if the GPS is turned of for a couple of weeks - a lock cannot be obtained until the database is made current (which happens automatically when the GPS is turned on)
• If the GPS has been moved across country while powered off, or the current position is otherwise not known, it will take longer to get an initial lock as it has to consider the entire world for possible locations.
• If trying to get an initial lock while at high speed, especially if any of the above bullets are in play, it will be especially difficult to get the initial lock as position is constantly changing.

Hope this helps,
Walter