Travis wrote:The initial costs have come down a lot, and you can get a unit for $150 or less, but the $100/year subscription gets me.
Just a clarification: I think you're thinking of the SPOT. The SPOT device is not a PLB. The SPOT is a specific product; PLB's are a general class of devices that broadcast at 406MHz to COSPAS-SARSAT satellites in low earth orbit
and geostationary high earth orbit. Alerts go to the US Air Force which serves as the coordinating body. SPOT uses satellite phone technology to transmit only to geostationary communication satellites in high earth orbit. Alerts are sent to a private company which I believe is part of the same company that sells SPOT.
Note: satellite phones are known to sometimes have difficulty in picking up a signal.
I'm not saying SPOT is good or bad; I'm just highlighting the differences between a PLB and SPOT.
A few observations:
A PLB has no subscription fee. SPOT has a $100/yr fee.
A PLB can be purchased for about $450. SPOT costs $150.
Do the math, and I think you'll see that you break even after three years. A PLB actually costs
less over a four year period ($450 vs. $550) than a SPOT. All years after the fourth year are essentially free of charge when compared to SPOT.
Note: this comparison is based on a lower end model PLB.
Note: The lithium batteries in a PLB are rated at five to eleven years, depending on the model. The batteries are replaceable. I imagine you'd have to replace the SPOT battery too. See also http://www.acrelectronics.com/misc%20in ... ompare.pdf
Also, 406MHz devices have been used for years in marine and aviation environments; they're proven technology. The SPOT on the other hand is new and unproven. I'm not saying SPOT is bad, but we really don't know that it's good either.
All that being said, I'm still holding off on buying a PLB (for now). 406MHz devices have been used for years in other arenas, but use as a PLB on land wasn't legalized until 2003. I think as they become more widely used the price will fall and the quality will go up, just has it has for digital cameras, laptops, cell phones, etc.
One man's opinion.