seeker242
Contributor
I think it is, because no one bought them!
PLBs Can Save Your Life
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I think it is, because no one bought them!
MaxE
Contributor
What was that made out of? It looks a lot like the custom divers canister
seeker242
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What is a MRG in this PLB discussion? 
I used a key ring to attach it to a bolt snap to clip to a D ring on my BC. Marine quality stainless steel is the best choice. Use silicone grease to lube the o-ring as needed, replace the o-ring every year or two, buy the o-rings from hdvseatek@gmail.com if you can't find them locally.
You mean a PLB that would be fine at depth without a canister? I don't think there is enough demand. Divers ask for it, but divers actually lined up with money destined to buy are the short line. Like CO tank testers. We got lots of discussion going, acknowledged the need, Analox created a wonderful one that can be calibrated in the boat rather than being sent to a lab, but price shock killed it.
Again, not enough demand. ACR has a trophy wall of used PLBs that saved people, acquired from their free exchange program, and pages of stories on their site - but not so much from divers. Get enough divers actually willing to spend the money, and then yeah, maybe.
That's the one I've carried for a few years now. Get the smaller choice. Internal Dimensions: Large 70mm x 150mm; Small 70mm x 130mm
I used a key ring to attach it to a bolt snap to clip to a D ring on my BC. Marine quality stainless steel is the best choice. Use silicone grease to lube the o-ring as needed, replace the o-ring every year or two, buy the o-rings from hdvseatek@gmail.com if you can't find them locally.
I rented one a time or two years ago. Heavy to carry to the boat, etc. They were expensive, but now discontinued. If you buy a used one, replace the o-ring.
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Approximately US $72.75 + approx. US $24.25 = $97
Dan
Contributor
It happened to me with leaky soft case about 100’ depth. Apparently it wasn’t long enough time for the small water leak to pressurize the air space inside the case to more than 22 psig (the pressure equivalent of what PLB1 is waterproof rated at 50’ depth). I got about half full of water in the case when I got back to the boat. My PLB1 still works fine.
The same thing happened with my GoPro 6. When I saw water leaking into the clear case as I descent to 70’ depth. I thumbed the dive and went back to the boat. The GoPro 6 survived.
That’s the reason I want to have a clear case so I can see what’s going on inside the case while underwater.
With black canister, you’ll never know whether water is leaking into the cavity. Once all the air is displaced by the leaking water and pressurized the cavity with water beyond the waterproof rated depth, all bets are off on whether you can recover the PLB from water damage.
This is the HDVSEATEK, much talked about on this thread.
divinh
Contributor
I picked this up for Songkran, New Year's in Thailand. The whole country becomes a free for all water fight. It's meant to keep your mobile dry, with triple Ziploc seals, rolled, then kept closed with Velcro. I took it empty down to 22m, just to see how well it would do. Only a few drops of water entered. It costs 20 baht, or about $0.66 USD. Heheh...
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