Personal Locator Beacons (PLB's)
Posted: Fri Oct 16, 2009 11:44 pm
DeBo and I have been riding our luck and going solo in the woods too often for some time now, but after reading the search and rescue thread over on the General forum http://www.arkansascanoeclub.com/mb/vie ... 284#p92284" onclick="window.open(this.href);return false; , I’ve decided to bite the bullet and get a PLB (Personal Locator Beacon). I’m going to share some of my research here, but if others have looked into it, I’d sure like to hear what you know too.
This is still a relatively new technology for land-based use; while checking references I learned that PLB’s have only been legal in the continental US since mid 2003. And it looks like prices and sizes have both gotten smaller in the last 12 months or so. Here’s my two current front-runners:
Spot (two models). Their newest one is in the 5 oz range.
http://www.findmespot.com/en/" onclick="window.open(this.href);return false;
Advantages: Can send “non-emergency” messages showing friends your current location, or to summon “non-emergency” help from your friends without having to scramble the local rescue squads. You can push a different button if you desire immediate emergency rescue. If you send the “current location” messages several times per day, then even if you were injured to the point of being unconscious, and never sent for help, there would still be a good chance rescuers could quickly home in on your last known location, and find you much more quickly than if they had to search a larger area. The first generation unit is slightly bigger and heavier, but still only 7.4 oz, and prices on the first generation unit are now under $100. Both Spot units have user replaceable batteries.
Disadvantages: User fee of about $100 / year, or more with premium service features, offsets the relatively low initial purchase price. Doesn’t broadcast on the same government-provided rescue frequencies as the other PLB’s; won’t allow rescuers to find you by radio beacon for those cases where a GPS fix cannot be obtained, apparently uses a privately run “dispatch” service instead of the government-monitored frequencies.
Another option is to go with a PLB that transmits on the 406 and 121.5 MHz frequencies. Until recently, these seemed to be priced at about $600 and up, but I found one that comes from what seems to be a reputable company, and is available from several dealers for under $300:
http://www.fastfindplb.com/en/index.php" onclick="window.open(this.href);return false;
Advantages: Signal has 5 watts of power (compared to 0.4 watts for the Spot), Use of the 406 and 121.5 MHz frequencies is a real technical advantage in emergencies; even if the GPS can’t get a fix due to heavy cover or deep valley location, the beacons still summon help and can lead a properly equipped team to home in on your radio beacon. Cost over the 5 year life will be less than the Spot. Small size, 1.34” X 1.85” X 4.17”, weighs 5.3 oz.
Disadvantages: Should only be activated for "life threatening" emergencies (you could be fined for "crying wolf"). Only functions as a “true emergency” device, can’t use it to send those “I’m here now” updates to your friends, or to request that friends come help you on a “non-emergency” basis. At the end of 5 years, have to send it to the factory for battery replacement. This particular model doesn’t float, but some others do.
Other units to consider: My limited research suggests that units by ACR may be to PLB’s what Garmin is to GPS units. Their Terrafix 406 is about $360, and floats. But it weighs more and is bigger than the other units above. I’m guessing that ACR may come out with some additional units in the near future to stay competitive.
This is still a relatively new technology for land-based use; while checking references I learned that PLB’s have only been legal in the continental US since mid 2003. And it looks like prices and sizes have both gotten smaller in the last 12 months or so. Here’s my two current front-runners:
Spot (two models). Their newest one is in the 5 oz range.
http://www.findmespot.com/en/" onclick="window.open(this.href);return false;
Advantages: Can send “non-emergency” messages showing friends your current location, or to summon “non-emergency” help from your friends without having to scramble the local rescue squads. You can push a different button if you desire immediate emergency rescue. If you send the “current location” messages several times per day, then even if you were injured to the point of being unconscious, and never sent for help, there would still be a good chance rescuers could quickly home in on your last known location, and find you much more quickly than if they had to search a larger area. The first generation unit is slightly bigger and heavier, but still only 7.4 oz, and prices on the first generation unit are now under $100. Both Spot units have user replaceable batteries.
Disadvantages: User fee of about $100 / year, or more with premium service features, offsets the relatively low initial purchase price. Doesn’t broadcast on the same government-provided rescue frequencies as the other PLB’s; won’t allow rescuers to find you by radio beacon for those cases where a GPS fix cannot be obtained, apparently uses a privately run “dispatch” service instead of the government-monitored frequencies.
Another option is to go with a PLB that transmits on the 406 and 121.5 MHz frequencies. Until recently, these seemed to be priced at about $600 and up, but I found one that comes from what seems to be a reputable company, and is available from several dealers for under $300:
http://www.fastfindplb.com/en/index.php" onclick="window.open(this.href);return false;
Advantages: Signal has 5 watts of power (compared to 0.4 watts for the Spot), Use of the 406 and 121.5 MHz frequencies is a real technical advantage in emergencies; even if the GPS can’t get a fix due to heavy cover or deep valley location, the beacons still summon help and can lead a properly equipped team to home in on your radio beacon. Cost over the 5 year life will be less than the Spot. Small size, 1.34” X 1.85” X 4.17”, weighs 5.3 oz.
Disadvantages: Should only be activated for "life threatening" emergencies (you could be fined for "crying wolf"). Only functions as a “true emergency” device, can’t use it to send those “I’m here now” updates to your friends, or to request that friends come help you on a “non-emergency” basis. At the end of 5 years, have to send it to the factory for battery replacement. This particular model doesn’t float, but some others do.
Other units to consider: My limited research suggests that units by ACR may be to PLB’s what Garmin is to GPS units. Their Terrafix 406 is about $360, and floats. But it weighs more and is bigger than the other units above. I’m guessing that ACR may come out with some additional units in the near future to stay competitive.