Holohil Systems Ltd.
SI-2B & AI-2B

SI-2B transmitter

AI-2B transmitter

These transmitters are designed for use as a backpack on waterfowl or large raptors.

Frequency Range: 138 to 235 MHz.

Transmitter: Crystal controlled two-stage design, pulsed by a CMOS multivibrator.

Pulse Width & Rate: 25 to 30 ms, nominal 0.7 p/s (42 p/m).

Specifications: (* = model shown above)
Model Weight Nominal Life Lifespan range Dimensions: L x Diameter (mm)
SI-2B* 12g 12 months 6-18 months 39 x 11
SI-2B 14g 18 months 12-24 months 46 x 11
SI-2B 16g 24 months 12-30 months 56 x 11
AI-2B 19g 24 months 12-30 months 43 x 15
AI-2B 23g 30 months 18-36 months 48 x 15
AI-2B* 30g 36 months 24-42 months 49 x 17
Power Output: Set to use available battery power over the required transmitter life.

Housing: Hermetically sealed cylindrical brass case. A foam pad is glued to the bottom surface of the unit to cushion it against the animal's body.

Attachment: For backpack application a brass tube is attached at each end for either a teflon ribbon or cable harness.

Antenna: Stranded stainless steel cable covered with a black nylon coating. Additional layers of shrinkable tubing reinforce the antenna at its base.

Activation:Removing an external magnet starts the transmitter. Replacing it stops the transmitter.


OPTIONS
Temperature (suffix "T"): An increase or decrease in temperature results in a corresponding increase or decrease in pulse rate. At the standard settings, the pulse rate changes from ~15 p/m at 0°C to ~50 p/m at 40°C. Each transmitter is supplied with a plotted calibration curve. This option adds ~0.05g to the finished weight of each transmitter.

Mortality (suffix "M"): AI-2B only. The available delays are 4 or 12 hours. Note: The 4 hour delay is only available in the 30g size. The 4 hour delay circuit indicates its activation by a double pulse. The 12 hour delay circuit indicates its activation by increasing the pulse rate from a nominal ~42 p/m to ~75 p/m. After the mortality mode has been triggered, any motion resets the transmitter to the normal pulse rate. This option adds ~0.5g to the finished weight of each transmitter.


Pictures
This link will take you to a page containing pictures of these transmitters on various species.

MISC. ANIMALS

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Holohil Systems Ltd., 112 John Cavanaugh Drive, Carp, Ontario, Canada K0A 1L0
Tel: 613-839-0676 Fax: 613-839-0675 E-mail: info@holohil.com

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