We have put RI-2B radios on over 70 turtles in different parts of Mexico. We have lost a couple of turtles that walked out of our field site, we have had turtles that were predated by a jaguar or puma, we have even had turtles die during an extreme drought, but we have never lost a turtle due to radio failure. Holohil makes an impeccable radio and they have great customer service.

The best radios.
Taggert Butterfield
UNAM