On Jan 20, 1:02 am, Goofball_star_dot_etal
wrote:

Obviously :-) a porous plug which equalizes pressure when dry and does
not do so when wet.

That sounds reasonable and I suppose it would make the release depths
more consistent. For me the big question is, is this the bit that
goes bad in two years? As I've mentioned, mine was manufactured in
march of 2000 and it sat in my EPIRB case for years and I just
disassembled and inspected it yesterday and it looked absolutely
perfect...

-- Tom.