Interesting.

He states : "And throughout all of this, I had no idea that anyone was down there looking for me. ACR "promises" that if you spring the extra $100.00 for the onboard gps, then the PLB will locate you within a 10 foot area, enabling that SAR to find you within 4 hours, worst case scenario. 4 hours came and went."

However on ACR's web site, the specs listed for their TerraFix PLB state the following: "Onboard GPS (P/N 2798.4 only) acquires LAT/LON when the unit is activated, your LAT/LON is transmitted as soon as acquired providing rescue agencies with your exact position to within 100 meters (110 yards)."