Ranger wrote on Jun 17^th, 2015 at 1:17pm:

3. If he wears it clipped to his PFD or clothes for quick access, it fell off somewhere along the way.

He does, in fact, wear it attached to the exterior of his PFD.  The principle reason for wearing it in such a manner is that he frequently runs his SPOT in a "continuous track" mode.  I believe Jimbo would be getting that if he had the SPOT with him.  Since it appears that there was no track since his launch, I suspect that the SPOT is not with him.

(At least this is what I'm hoping is the way it plays out.)

dd