Diver Recall

[Akyla]

If you want a real solution, you spend some money and go with something like this unit from OTS.

Underwater Communications by Ocean Technology Systems

I have not used this system, but have used their U/W comm units and they work well, so no reason this should not perform as they say.

 

[fshguy]

I've been very happy with this: Acoustic diver recall system

 

[algulfdiver]

I've been very happy with this: Acoustic diver recall system

how much is this unit?