Order
Contact to order
E-mail, MMT INC. 102, 4-12-1, Takakura, Iruma, Saitama, 358-0021, Japan.
Price
For your rough estimation, Normal Towed type: JPY730,000, Longlife Fixed
type: JPY950,000, Interface system JPY220,000.
Note that the price based on Japanese Yen. Handling and shipping fee are
not included.
Consult us
-
Email: support@mmtcorp.co.jp
Customize your A-tag
1.Normal type or Longlife type?
- Normal A-tag
- Basic type of A-tag consists of CPU, flash memory, pressure resistant alminum
case, and a stereo-hydrophone. Continuous 30 hours recording is possible.
Intermittent recording enables much longer period of monitoring. Suitable
for towing and tagging.
- Longlife A-tag
- Identical electronics with larger battery case. It works 1 month continuously.
Suitable for fixed monitoring and long-term moving platform such as a ship,
a glider or a drifting buoy.
2.Towed or Fixed or Tagged?
- Towed type
- "I" shape A-tag is for towing use behind a boat. If you can download
data every day, Normal type is good enough. If you operate A-tag for a
long time with a drifting buoy or a glider, Longlife type is recommended.
- Fixed type
- "T" shape A-tag is suitable to attach firmly on a seabed or a
waterbreak. Two hydrophones are placed at the both end of "T"
shape structure. Once you measure the direction of the baseline of the
hydrophone), sound source bearing angle can be converted to absolute orientation
such as North, South, East, West. This works to identify swimming direction
and positions in a narrow passage of animals. Natually, Longlife type is
recommended. If you wish to use buoy, "I-shape" will be better
since it is hard to fix the direction of "T-shape" A-tag.
- Tagged type
- Tagged type should have minimal size. Just bear Normal type is fine. However,
pressure resistant float, VHF transmitter, TDR or other biogigging system,
geolocator may be nessessary to come with depending on research purposes.
Consult with Tom Akamatsu.
3.Homogeneous or Hetergeneous hydrophone?
- Homogeneous stereo hydrophone (MHP-140-140)
- Stereo hydrophone MHP-140-140 has identical two hydrophones, which is most
sensitive at 130kHz (-200.0dB re 1V/uPa). This is suitable for the area
having only one species of odontocetes in a noisy environment
- Heterogeneous stereo hydrophone (MHP-140-70)
- Stereo hydrophone MHP-140-70 has two differnt hydrophones. The first one
is most sensitive at 130kHz same as above.The second one is most sensitive
at 70kHz(-200.2 dB re 1V/uPa). It is suitable to identify Phocoenidae species
such as harbor porpoises and finless porpoises out of Delphinidae species
using two band comparator.
4.Accessories and options
- Interface system
- At least one set of the interface system is needed for all users. This
set consists of an interface box, cable and Logger Tools software, which
is nessessary for setting up and downloading A-tag. Idencal set can be
used for any types of A-tags such as Normal Towed, Normal Longlife, Fixed
Longlife, Fixed Towed or tagging type.
- Adapter ring
- All towed type need this to fix hydrophones with A-tag.
- Deep water option
- Make it possible up to 2000 m operation. Longlife type only
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