Me wrote in news:Me-A9B766.09450225112005
@netnews.att.net:

In article , Larry

wrote:

Then, there's the chance the old transducer is as worn out as its
electronics. They don't last forever, either.

--
Larry

Well now Larry, just what part of the Barium Titanate Crystal in
those transducers "WEARS OUT"? It either works or it doesn't, but
it isn't a "WEAR Item". Barium Titanate Crystals do not degrade over
time or use. They can fracture, but that happens only if overloaded,
or overpowered.


Me


Well, now, Me, the mount corrode. Marine growth eats into the
transparent dome, sometimes made of rubber, and makes it leak into the
"Barium Titanate Crystals". Constant contact with seawater eats
anything.....and should be replaced when the new sonar is installed WITH
the transducer it was TUNED WITH.

(Impressive about the name of the crystals, by the way...(c