pitfield wrote:Never had an emergency, but I can tell you that the tracking feature worked perhaps 50% of the time. It would work for a while, and then not work for the next thirty or forty minutes. It would alternate between tracking well and not at all. I've assumed the tracking unreliability could impair the device's ability to assist me in an emergency; perhaps I'm wrong about that and I've been unfairly harsh. But I think I'll stand by my conclusion: I don't want my life to be dependent upon a device that doesn't always function as intended.
You have pointed out the crux of the issue. Most of us will want our survival gear to be as reliable as possible. More so when it may be our "last, best option." 406 MHz PLBs have proven to be very reliable and effective and if the GPS doesn't get a location, can still be very effective with Doppler location and 121.6 MHz homer. SPOT has had successes, don't get me wrong, BUT it has proven less than reliable in gaining a GPS location and in tracking, its only somewhat half-assed back-up, when engaged. It is a relatively low power signal more easily blocked than a PLB's and we have seen plenty of cases when the signal doesn't reach the satellite even when it should, let alone in difficult circumstances. It does generally give better tracking from aircraft than on the ground, but even then many report less than stellar performance. SPOT 2 should be better in this respect, probably much better, but we still have seen tracking and satellite communications issues even in the short time we have had it. Without a GPS location and with no homer, it's something of a crapshoot. Given the relatively low cost of a PLB these days, under $300, and no need to pay an annual fee, I think there's little reason not to carry a PLB. A friend recently returned from a vacation to New Zealand. It was fun following along on his travels using the SPOT I gave him, but he also carried a PLB, just in case.