On Dec 20, 7:56*pm, V1 wrote:
I was reading the details in my SPOT user manual. In the Operation
Conditions And Climate section, it lists multiple potential issues,
including:

- If you exceed 700 mph (Mach 1) GPS accuracy degrades

Ahhh, OK - I'll keep that in mind ....
- Frank

Which explains why MY tracks are so incredibly precise!