Hydrophones

Beam Reach hydrophones

• Arrays
  • 4-element linear array (Lab40 model from LabCore Systems, Lon Brockelhurst) Though these are not calibrated, they are the same model as the elements in a similar array that was calibrated by Marla Holt. (Add her calibration curves here?)
  • 8-element beamforming array from Mike Dougherty (not operational)
• Single hydrophones (this should probably become or be supplemented by a Google spreadsheet)
  • Uncalibrated
    • ITCs (towed single and in Orcasound array)
    • other CRTs
    • salvaged Navy sonobuoy single elements
    • miscellaneous single elements (donated by Mike Dougherty)
    • etc...

• • Calibrated (see response curves below)
    • Interoceans (used courtesy Colorado College; calibrated by Joe Olson at Keyport facility)
    • Reson TC4032 (deployed 2009 at Lime Kiln with The Whale Museum, Spec sheet for Reson TC4032)
    • Lab40 (one of Marla Holt's, but same model as those used by Beam Reach; by Joe Olson at Keyport facility)
    • C54XRS (from Cetacean Research Technologies; calibrated by Joe Olson at Keyport facility)

Wish list of other hydrophones

(Will review above as we try these out...)

• Hydrophone comparison matrix
• Naxys eHyd digital hydrophone (Expensive! APL paid ~$13k in ~2007/8)
  • Link to official spec sheet for Model 02345
  • Archived official spec sheet (fall '09)
  • PDF spec sheet extracted from Aloha mooring description .doc