(Solved!) No. of sats going to 0 for a second during the flight?

Is there any GPS parameter that can tell that RF frontend of GPS has some issues or you concluded it after seeing no. of sats going to 0?Thanks.

Zero sats is a very telltale sign.

Thanks.Will report back after rewiring my GPS.

Finally solved my issue!! Thanks everyone for your suggestions.

I did two things.First i reset my GPS to default by using Ucentre software.That made a big difference in GPA delta.Now i don’t see anything above 0.2 sec.

Second i wired my GPS from a dedicated clean 5v power and that fixed my no. of sats.Now i don’t see no. of sats dropping to 0 anymore.