VH165 & VH180 Omni-directional Hydrophones (69 & 180 kHz)
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The VH165 operates between 50 kHz to 85 kHz and the VH180 operates at the 180 kHz. The VH165 is encased in a black 16 mm diameter epoxy tube at a length of 100 mm and the VH180 is encased in a green 16 mm diameter epoxy tube at a length of 100 mm.
For more information, see the VH165 and VH180 Omni-directional Hydrophones Datasheet.
- Attach hydrophone to a weighted rope to counteract buoyancy and put hydrophone to depth. Do not put strain on hydrophone cable! Amount of weight needed depends on flow rate in the area.
- Turn off boat motor and depth sounder to reduce acoustic interface.
|Frequency range||VH165: 50kHz – 85kHz
|Tag compatibility||VH165: V7, V8, V9, V13, V16
VH180: V4, V5, V6
|Operational temperature range||-5°C to +40°C (water must not freeze)|
|Case (dimensions and material)||VH165: 16 mm diameter x 100 mm black epoxy tube
VH180: 16 mm diameter x 100 mm green epoxy tube
|Weight in air||550 g|
|Cable type and available lengths||Shielded twisted pair, polyurethane jacket; Lengths: 5 m, 10 m (standard), 30 m|
|Uses||Omni-directional hydrophone “hears” pings from any direction. Best for determining if a tag is in the area.|
|Maximum tow speed||Not recommended|
|Preamplifier gain||50 dB nominal|