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PLB vs SPOT

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Re: PLB vs SPOT

tcj wrote:The Idaho survival thread pushed me over the edge on PLBs. I do a lot of solo hiking in the back country so I'm ready to purchase one. I'm pretty low tech so my research keeps coming around to a Spot generation 3 Locator beacon.

I'm wondering about the subscription costs. Here's what I can find on that: "$149.99 yearly subscription covers basic service and tracking. Add unlimited tracking for an additional $50 per year, or extreme tracking at 2.5 min. intervals for an additional $150 per year".

Does anyone know what the "unlimited tracking" includes that the "basic service and tracking" does not?

Also, my airplane has a 121.5 ELT so I will use the spot in the airplane as well so I will be more comfortable flying more than gliding distance from a hay field.


I have a Spot and a PLB. I'm not the most computer savvy person to say the least, but I find the Spot web interface a gigantic pain the ass to use. Good luck figuring out what it'll cost you before you sign up...I couldn't. If you don't need or want tracking don't get one. I would not pay the subscription fee just for the SOS feature.

A PLB has no subscription fee and is a better system if you just want the SOS ability for emergencies. Not as versatile as a sat phone or maybe even an InReach, but less expensive.
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Re: PLB vs SPOT

Hammer wrote:
tcj wrote:The Idaho survival thread pushed me over the edge on PLBs. I do a lot of solo hiking in the back country so I'm ready to purchase one. I'm pretty low tech so my research keeps coming around to a Spot generation 3 Locator beacon.

I'm wondering about the subscription costs. Here's what I can find on that: "$149.99 yearly subscription covers basic service and tracking. Add unlimited tracking for an additional $50 per year, or extreme tracking at 2.5 min. intervals for an additional $150 per year".

Does anyone know what the "unlimited tracking" includes that the "basic service and tracking" does not?

Also, my airplane has a 121.5 ELT so I will use the spot in the airplane as well so I will be more comfortable flying more than gliding distance from a hay field.


I have a Spot and a PLB. I'm not the most computer savvy person to say the least, but I find the Spot web interface a gigantic pain the ass to use. Good luck figuring out what it'll cost you before you sign up...I couldn't. If you don't need or want tracking don't get one. I would not pay the subscription fee just for the SOS feature.

A PLB has no subscription fee and is a better system if you just want the SOS ability for emergencies. Not as versatile as a sat phone or maybe even an InReach, but less expensive.


Agreed--if you don't need tracking, the SPOT offers nothing beneficial for whatever the subscription fee that a PLB offers for free. It has to be registered initially and then every 2 years, but that's free and easy to do online (doesn't require much computer savvy, of which I have very little).

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Re: PLB vs SPOT

okay, I need a little more education on these. I thought they were all Personal Locator Beacons (PLB) and Spot is just one brand of PLB.
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Re: PLB vs SPOT

tcj wrote:okay, I need a little more education on these. I thought they were all Personal Locator Beacons (PLB) and Spot is just one brand of PLB.


A PLB is a 406mhz transmitter just like and ELT.

I'm not sure what you call the devices like SPOT and InReach that use private satellite networks, perhaps "tracker" or "messenger." Even SPOT is careful to not refer to it as a beacon on PLB.
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Re: PLB vs SPOT

Zzz wrote:
tcj wrote:okay, I need a little more education on these. I thought they were all Personal Locator Beacons (PLB) and Spot is just one brand of PLB.


A PLB is a 406mhz transmitter just like and ELT.

I'm not sure what you call the devices like SPOT and InReach that use private satellite networks, perhaps "tracker" or "messenger." Even SPOT is careful to not refer to it as a beacon on PLB.


Zane is correct. The Portable Locator Beacons send an emergency signal via the Search and Rescue satellite system to the Rescue Coordination Center with responsibility for the area the signal is received from.

Most of the newer PLBs transmit on both 406 and 121.5 mHz, and they almost all are GPS enabled, so when activated, they transmit a fairly precise set of coordinates to RCC. And, RCC, a military/governmental function, then activates the responsible Search and Rescue resources in your area, after verifying via the contacts that you registered with them that this does appear to be an emergency.

The SPOT and In Reach devices are not PLBs, though at least two magazine articles I've read in the aviation periodicals called them that.......

I call these devices "Trackers" or "Tracking Devices", because that's their primary function in most applications. They are capable of transmitting an emergency signal via a satellite telephone system (SPOT uses the GlobalStar system, InReach uses the Iridium system) to that company's office which is responsible for monitoring these things....ie: NOT the military or government. That company then figures out who to call with your emergency in the geographic area where the signal came from. Usually the local Sheriff's office.

The trackers also offer some other basic communication capabilities that a PLB doesn't. The SPOT can send pre-determined messages when you choose, ie: "I've landed and parked for the night" that you program in. Some also have two way text capability.

PLBs on the other hand have only one function: Transmitting an emergency signal to the "official" Search and Rescue people, wherever you happen to be.

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Re: PLB vs SPOT

That helps a lot everyone, thanks! I'm still a little fuzzy on which PLDs can send a message not in an emergency and if the messages can be pre-programed or do you need a smart phone in conjunction with the PLD to do that in real time?
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Re: PLB vs SPOT

tcj wrote:That helps a lot everyone, thanks! I'm still a little fuzzy on which PLDs can send a message not in an emergency and if the messages can be pre-programed or do you need a smart phone in conjunction with the PLD to do that in real time?


A PLB can only send one message "HELP! I'M SCREWED" and that message is picked up as MTV spoke about.

InReach and SPOT are not PLBs. They are satellite communicators. They allow you to send an SOS (both, which is then forwarded by their respective companies), send tracking messages (both), predetermined text messages (both), messages composed in the field (InReach only) and receive messages (InReach only).

The InReach network (Iridium) is much more reliable and somewhat more expensive than SPOT.

I bought the InReach for the better coverage, but absolutely love the two way messaging now that I have it.
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Re: PLB vs SPOT

It's not quite true that PLBs can send only a "help, I'm screwed" message. The ACR PLBs and Artex ELTs can also send an "I'm OK" message, which is forwarded through ACR's system as either a text or an email to whatever phone or email account you designate. It's essentially their self-test system. I've used it a couple of times, to let Mah Woman know I've arrived when I couldn't get a cell phone signal. It is a subscription add-on--it's $39.95/year. Although I have an Artex ELT and 2 ACR PLBs, I only have one of them set up to send the message.

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Re: PLB vs SPOT

This subject is near and dear to me, and it saddens me that there is still a need to discuss it. So this will be the roughest post you’ve ever read from me.

If you can only afford ONE "rescue/body recovery" device the only one to have is a tracking device - period - it's not up for debate, and I'll tell you why in a minute.

When I'm flying in either the SQ2 or the 185 I have on board: 406 ELT, inReach (which is always turned on before I take off and tracking, part of my takeoff checklist), a PLB, and an Iridium Satellite Phone. I realize I'm very fortunate to be able to afford all these.

If I could only have one of these in my plane it would be the inReach, no questions asked. And that's because a tracking device, and inReach is the best, is the only one of all these devices that doesn't require an "event" to help rescue/recovery personnel find you (assuming you have it turned on and tracking of course). It’s tracking your lat/long/altitude/and speed. Of course you are smart enough to share your tracking website link with your friends and loved ones, and post it here as part of your profile. And should you be in good enough shape after the crash, or have enough time before the crash, you can switch it to S.O.S mode.

406 ELT, requires a crash to be activated and even then you can't count on it activating. You can turn on a 406 independent of a crash, from the switch on the panel, but you might not have time to activate it before, or be too injured or dead afterwards.

PLB, requires you activate it, if your injured same thing, you might not be able to, obviously if your dead you can’t. And you’d better have it hanging around your neck at all times or you might not be able to get to it if you are still alive.

Satellite Phone requires you be able to turn it on and operate it, which you might not be able to do after a crash.

A little over a year ago a very good friend of mine, and fellow BCPr, took off around 7am in his Citabria for parts unknown as he did every weekend. When he missed a get together with a friend at 10:30am his uncle called me and he and I started the search. We had no idea where he had headed or how far he had gone. Think about it. You have to figure on full fuel at launch, and now it’s 3 1/2 hours later. How far could you fly in 3 1/2 hours. Go ahead, plot that out from your airport, out 3 1/2 hours, and now draw a circle with that distance. That’s an enormous search area.

You can read the original post about the crash here, and if you haven’t you should:

https://www.backcountrypilot.org/forum/we-lost-one-of-our-own-this-morning-15784

Thanks to Hank’s GoPro, from which the NTSB was able to recover video, we know what happened. He was cruising the treetops when he suddenly spotted high tension wires directly ahead. No time to trip the 406, no time to turn on a PLB had he had one, no time to activate the S.O.S on an inReach had he had one. Only time enough to dive the plane to get under the wires, which he did successfully. Unfortunately his left wing impacted an oak tree branch and that flipped his plane over and he impacted rising terrain upside down. The plane slide on its back for about 75 feet or yards, I don’t recall which, and at some point caught fire. The entire aircraft was consumed leaving only the charred steel fuselage tubing, and Hank’s skeleton.

The autopsy told us that Hank most likely died of blunt force trauma to the head, not from burning up with the plane. He was as tall as me.

The 406 ELT never activated, and of course burned up with the rest of the plane. And remember that 3 1/2 hour radius search area? He crashed just a couple of miles from my airport, on a deserted ranch, at around 7:30am. Had his fire not ignited a 30+ acre brush fire we’d have never found him.

Obviously none of these devices will save you if you are killed, but what about your loved ones getting answers sooner, rather then later, or perhaps never. With an inReach tracking rescuers would have your last plotted location from where to begin searching. My inReach plots me every two minutes.

Sorry for dragging everyone down, this is just really important to me. Get an inReach, and use it, before you upgrade your 121.5 ELT, and before you buy a PLB. You owe it to your family and friends if not to yourself.

Oh, and where does it go if you trigger the S.O.S. on the inReach?

Behind every inReach is GEOS. Behind GEOS is the IERCC — formally known as the International Emergency Response Coordination Center. Send an SOS message through inReach, and it goes directly to the IERCC. More specifically, it goes to a secure underground bunker located north of Houston. It has redundant electrical grids, generators, and a potable water supply from an underground well. In short, complete self-dependence if the outside world “goes away.”

The team at the IERCC is staffed and ready 24/7, 365 days per year, with SAR Mission Coordinators and Duty Officers. As soon as they receive your message, they’ll track your device and notify emergency contacts and responders in the area — they’ll also stay connected to provide updates on your location or to communicate with you. As soon as you activate your inReach, you have full, free access to the IERCC through GEOS SOS monitoring and emergency dispatch.
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Re: PLB vs SPOT

Barnstormer, this is one of the big reasons I bought an InReach and pay for 2-minute tracking points.
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Re: PLB vs SPOT

With the Gen 3 basic tracking, a point every 5 or 10 minutes, is included in the price of the basic $100 a year plan. For an extra $50 a year you can get the tracking points every 2.5 minutes. The SPOT is a one way device, you cannot receive any messages.
The inReach is just like the SPOT except it is a two way device. Send and receive email and text messages. Tracking points down to 2 minutes with the right data plan. I have this device, best part is it is automatic. It turns itself on and goes into tracking mode when ever I turn the master switch on in the plane. It also shuts itself down when I turn the master off. There are four data plans that allow this. I pay $25 a month so about twice as much as a SPOT. There's an app for your phone/tablet that allows messaging as easy as the texting app you use now on your phone.
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Re: PLB vs SPOT

Okay, thanks everyone. I understand the differences in the devices now and can make an informed decision to meet my needs.
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Re: PLB vs SPOT

tcj wrote:Okay, thanks everyone. I understand the differences in the devices now and can make an informed decision to meet my needs.


The correct answer is that you need both 8)
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Re: PLB vs SPOT

I have the SPOT and am satisfied with the service/tracking function but agree it is not 100% perfect in every way. There is one additional function that was lightly touched on but several people have overlooked and that is the help feature. When activated a predetermined email/text tree (friends and family) is notified of your position and you need help but not search and rescue mode like you get when you push the SOS button.

In Alaska the SOS is received by the SPOT "operator" who then immediately notifies the State Troopers that oversee Statewide Search and Rescue and dispatches the available resources. Same as if you called them using 911.

Spot also offers an interface with your cell phone to provide text capability for personal messages. This is an additional devise and of course more money. I've never used one so don't know much about it.

I use my SPOT on a regular basis and it does have the occasional dead area where it misses sending a signal. Not very often but it does happen. The InReach may very well be a better unit but I have never been around one to compare. I know quite a few people that use the Spot however.
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Re: PLB vs SPOT

Any opinion of Inreach SE vs inreach Explorer?
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Re: PLB vs SPOT

As an InReach user I am sold on it and tell everyone else to get one over a SPOT beacon. It's reliable, easy to use, and the two way texting is fantastic for a number of reasons. It also pairs with a smartphone via bluetooth, so when you install their free app you can send/receive messages like a normal person instead of trying to type them out with the little joystick pad (though the predictive text it has can help save time). Their app also lets you download terrain data and overlay it on the tracking, so you have a little topo map with GPS when you pair a phone with the InReach.

You still need an ELT in the plane and 406MHz units transmit your GPS position, but ask CAP sometime how many times those fail to activate or just get destroyed in the impact/fire (or antenna gets sheared, transmits into the dirt because you're upside down, etc). If you carry a personal locater "device" (and given this group's activities you always should), I would take an InReach over a 406MHz PLB personally. I can get my exact coordinates to SAR either way, but the InReach also lets me tell them what is going on and seek guidance if necessary, as well as communicate to anyone I want in both emergent and non-emergent situations. It's also a hell of a lot cheaper than a sat phone with a larger non-voice feature set.

tailwind5sw wrote:Any opinion of Inreach SE vs inreach Explorer?

To this question - the Explorer just adds GPS navigation capability. If you need/want only a single device in the backcountry (i.e. when hiking around) then this can work for it, but the Explorer won't let you install topo DB's or the like on it, so you still need an ancillary device if you want that. However if you wish to simply show directionality to waypoints it can be a good feature. I got the SE since I also have a Garmin 64s for backpacking nav purposes (and a dozen other reasons to have a quality handheld GPS), plus a phone I keep paired up to the InReach for easier text use which I put their topos on too. I honestly haven't found a need for nav on the InReach, but if you are hell bent on one device to do it all then the extra $ may be worth it. Either way they both have a GPS and will transmit your location as intended.

On a related note - I recently created a system for point-based weather on my InReach after an 8-day pack elk hunting trip where I really wanted to know and couldn't. It's still in alpha phase but does work, at least insofar as I can test by myself. If anyone here is interested in trying it out please msg me privately and I can get you set up. It also isn't free for me to provide so I'm not publicly giving it to the world but having some more people testing it out and giving feedback would be useful, and this is exactly the sort of crowd I want to try it. Should also work on sat phones, but I don't have one of those to verify with. It does work with any cell phone provided you have even a tiny sliver of coverage.
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Re: PLB vs SPOT

Wow! A restart of a 4.5 year old thread.

Lots has changed in those ~ 5yrs.

There are very valid points on both sides of the argument and as Zane said having both a 406 ELT (and/or PLB) and a tracking device is probably the best idea.

As pointed out the PLB is great if you can deploy the antenna and are in sight of a satellite (nod goes to tracking here since the breadcrumbs will lead to last transmission when someone gets around to reporting you missing).

A 406 ELT, as was pointed out to me on another thread, delays 53 seconds before sending the first burst. Fifty three seconds is forever in an emergency in an airplane. Which begs the question as to where your ELT antenna is located since it needs a "view" of the satellite in order to send the "come save my butt" message.

Rag and tube guys can locate the antenna within the fuselage "cage", assuming you don't have a radio opaque coating on your fabric, which could protect it from being sheared off on impact. Aluminum AC's, will need to place the antenna on outside of the fuselage I understand.

Also look at the specs to determine the number of degrees the antenna can "see" a satellite. Some can do less than 180 degrees others ~270 degrees. This is important if your plane ends up in a position other than upright.

Does your ELT start looking for a satellite before of after the impact or pressing emergency switch? If it starts looking after, see above as to the importance of antennas.

I personally would prefer my ELT be tracking my position constantly and be ready to send my coordinates in the first opportunity, especially if the antenna cannot get a multiple GPS bird fix after arriving at the scene of the incident.

I will leave the tracking device details to those who use one all the time. I have used a SPOT and found the breadcrumbs to be neat and folks back home could see where we were and if we got there, but I don't have any strong opinions one way or the other on these devices.

The 121.5 frequency is no longer monitored via the satellites and, while useful for local SAR, should no longer be your primary emergency locator method.

Stepping off soapbox now.

TD
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