Replacing my PLB

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Re: Replacing my PLB

Postby Warin » Sat 04 Aug, 2018 3:49 pm

wayno wrote:when SAR get close to you they still need to have the beacon going to pinpoint you effectively, they switch to another frequency coming from teh beacon that they can pick up on antennas that are often installed on the helicopters and carried by SAR


121.5 MHz .. fitted to and monitored by commercial aircraft too, the commercial aircraft cannot do direction finding but they can monitor signal strength - when the signal strength peaks they are closest to you and would normally report it. This same frequency was used by the older PLB/EPIRBs too .. and it has not changed with the 406 - it too transmission on 121.5 and on 406.

I'd think if the transmitter failed after a day the rescue people would still be keen to get to you, so just stay put and leave the PLB/EPIRB on. If you 'drift' then they are going to have problems finding you after the PLB/EPIRB stops transmitting.
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Re: Replacing my PLB

Postby emma_melbourne » Fri 07 Dec, 2018 2:49 pm

Thank you all for the update.

It appears that the ResQ Link PLB is usually $299, and the Garmin InReach Mini is $439.12 (cheapest I could find), so the difference in price is only $40.
(Link: https://www.zylax.com.au/garmin-inreach ... 79-00.html? )

I realize there's subscription fee and monthly fee etc, also for using the Garmin InReach Mini.

Aside from the price difference, the Garmin InReach Mini is 30 grams lighter than the ResQ Link PLB. (At 100 grams versus 130 grams)

Then the added functionality of messaging, checking in with family, being able to communicate my location etc.

So I am leaning towards the Garmin InReach Mini.
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Re: Replacing my PLB

Postby Lizzy » Fri 07 Dec, 2018 4:31 pm

emma_melbourne wrote:Thank you all for the update.

It appears that the ResQ Link PLB is usually $299, and the Garmin InReach Mini is $439.12 (cheapest I could find), so the difference in price is only $40.
(Link: https://www.zylax.com.au/garmin-inreach ... 79-00.html? )

I realize there's subscription fee and monthly fee etc, also for using the Garmin InReach Mini.

Aside from the price difference, the Garmin InReach Mini is 30 grams lighter than the ResQ Link PLB. (At 100 grams versus 130 grams)

Then the added functionality of messaging, checking in with family, being able to communicate my location etc.

So I am leaning towards the Garmin InReach Mini.


Hmmm looks like $140 difference not $40
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Re: Replacing my PLB

Postby Grabeach » Mon 12 Aug, 2019 9:22 pm

I was cleaning out a cupboard today and pulled out my day pack. Thought it would be empty but turned out to contain my Fast Find 211 with an expires Aug. 2016 sticker. This wasn't much of an issue as I basically haven't walked for three plus years (knee), but having recently planned some exploratory mountain biking I thought I'd follow up on the registration. Went onto the AMSA web site and re-rego'd it till Aug. 2021. Only after having done this did I notice from the web site (wasn't noted on the last rego details document) that the battery had an expiry date as well. When I was walking every month or two, I'd simply check the night before that there were the maximum three bars when I pressed the test button.

Thinking about the above raised a few questions:-
1. If I had been walking and actuated the device, what would have happened? All my old contact details would still be correct and obviously the device would have sent a signal, but then what?
2. What does the battery expired date mean, both technically and regulation wise?
3. What does three lights mean? The card with the unit seems to suggest this means it's fully charged. In which case, shouldn't this override what is possibly an arbitrary expiry date?
Any thoughts?
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Re: Replacing my PLB

Postby wayno » Tue 13 Aug, 2019 3:49 am

expire is a date the manufacturer cant guarantee the battery will keep working past.
there should also be a function to test the satellite connection, but that uses more of the battery.
if you've got three lights you have full charge then it should still work. they don't expire your ability to use the beacon.
because its needed for potentially life and death emergencies, they put a conservative life on the battery life expectancy... there's no point saying it might work for ten years, Might work isnt good enough for the circumstances you could use it for, they are saying it will work for seven years, or however many it is guaranteed for, we cant guarantee its reliability after that. battery life gets affected by the cold, they have to take into account how much cold weather it might have to survive... some people won't get much more than the guaranteed amount of time out of the battery, others might get a lot more...
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Re: Replacing my PLB

Postby davidmorr » Sun 03 Nov, 2019 10:46 am

After a number of incidents recently where a PLB was used or may have been needed, I need to get one. Got a few questions:

1. Are the three mentioned by the OP still the ones for bushwalking?

2. Which GPS satellite system do they use or doesn't it matter?

3. Should the battery be replaced if the unit has been set off?

4. They all seem to come with a pouch of some kind. I am guessing the quoted weights are without the pouch or other accessories. What are the weights as you would use the device, ie, with pouch. It seems there is not a big difference in device weights initially, but the pouches could well change that.
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Re: Replacing my PLB

Postby wayno » Sun 03 Nov, 2019 10:58 am

1 yes
2 cospas satellites specific to PLBs and EPIRBs
3 you usually have about 24 hours battery life once its set off assuming the battery is still in good condition... if you have it on for very long then you will need to replace the battery, some devices you can test to see how much batter life there is. i dont know if any of those devices tell you what the battery life is, they all have a useby date , between 7 and ten years from date of purchase.
the advantage of two way sat devices is the batteries are rechargeable... so you can reuse it, but you have to pay subscription fees but get the benefit of two way comms
Last edited by wayno on Sun 03 Nov, 2019 11:03 am, edited 1 time in total.
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Re: Replacing my PLB

Postby davidmorr » Sun 03 Nov, 2019 11:02 am

wayno wrote:2 cospas satellites specific to PLBs and EPIRBs


So these provide the GPS location as well as receiving the signal from the device?
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Re: Replacing my PLB

Postby wayno » Sun 03 Nov, 2019 11:06 am

they only provide a GPS location to the rescue services, not to the PLB device
they receive the signal from the PLB's
two way sat devices use different satellite systems
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Re: Replacing my PLB

Postby davidmorr » Sun 03 Nov, 2019 11:59 am

wayno wrote:they only provide a GPS location to the rescue services, not to the PLB device

Going back to my original question, does the PLB use the GPS system only, or other systems like GLONASS, and does it matter which it uses?

Cospars appears to be basically just a transfer mechanism between the PLB and the LUT, with some location ability for PLB's without built-in GPS units.
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Re: Replacing my PLB

Postby wayno » Sun 03 Nov, 2019 1:43 pm

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Re: Replacing my PLB

Postby Warin » Sun 03 Nov, 2019 3:50 pm

davidmorr wrote:
wayno wrote:they only provide a GPS location to the rescue services, not to the PLB device

Going back to my original question, does the PLB use the GPS system only, or other systems like GLONASS, and does it matter which it uses?


The PLB you buy should say what it uses .. if it does use anything itself for location. All the ones I see say GPS, no mention of anything else. I think you'd pay a little more for adding other location systems, not much but more. Note this will be the PLB itself, nothing to do with the rescue system as that works with a PLB that has no GPS.
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