Instead of choosing a "SPOT or PLB", why not consider a SPOT and a PLB? In aviation redundancy is good!

Wayne
http://www.soaridaho.com/

"brianDG303" wrote in message ...

The question I have about this is the effectiveness of the different
alert devices while upside down. Would the SPOT get a message out,
would the PLB? Where I fly there would be no cellphone coverage and no
way to get a fire truck with an airhorn, so it would be SPOT or PLB
and a very long wait.

Brian