We are in the process of purchasing new hydrophones for acoustic field work
on killer whales in Alaska. Someone recommended transducers by High Tech
Inc., especially types of the HTI-96-MIN SERIES or HTI-94-SSQ SERIES. The
company also offers custom made hydrophones. I don't have any experience
with their products, and was wondering whether any of you had used the units
in the past and can fill me in on the good, bad, and ugly about the them.
Joe Blue's excellent web page gave a good overview of the specs, but
unfortunately Joe doesn't have any info on the reliability and durability of
the units.
We generally make recordings at 10 to 15 meters depth. The frequency range
of greatest importance to our research is 100Hz to 15kHz, although we using
mainly SONY D8s and therefore record reliably signals up to 20 kHz. We also
would use the transducers in a fixed application that is meant to operate
year round. It therefore needs to handle strong currents well and the
occasional hit by an unspecified object.
Thank you very much for your time.
Cheers,
Harald
*****************************************************
Harald Yurk
Department of Zoology
Marine Mammal Research Unit
University of British Columbia
6248 Biological Sciences Road, Hut B-3
Vancouver, B.C., Canada V6T 1Z4
Phone:(604) 822-8181
Fax:(604) 822-8180
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