Various Weights Are Available: Efficient in Avian Tracking
HS Code: 8526919090
What is VHF? VHF is short for very high frequency, it usually means radio waves between 30MHz to 300MHz, suitable for short range signal transmission. A receiver with antenna can receive signals from a VHF transmitter. A VHF transmitter is reliable and highly efficient in performance.
Wildlife telemetry tracking systems consists of VHF transmitters, antennas and receivers. An antenna and a receiver must be combined to receive signals sent from a transmitter. We do various kinds of transmitters for animals and bird of different weights, body sizes and living habits. (many types of transmitters are available, collar transmitters, implantable transmitters and transmitters for reptiles and amphibian animals) Features and Functions of a VHF transmitter Battery life can be as short as about 15days and as long as several years. Implantable transmitters could be used for snakes, lizards and fish.
Transmitters weigh from 2.2g to 25g. Leg Bands are used on long-legged birds such as cranes and storks. Leg Band Attached to the leg above the knee, antenna pointing downward. Transmitter is attached with epoxy to a plastic or metal leg band, normally supplied by researcher. Does not encumber wings, body, or neck, so behavioral effects are minimized. May reduce potential aerodynamic drag during long distance migrations. Field range comparable to models using external whip antennas. Neck Band Three methods of antenna attachment: short whip antenna pointing downward, in front of the bird's breast, a short whip antenna pointing posterior over bird's back, or antenna embedded into the neck band material in a zigzag pattern. Antenna embedded in neck band has one third to one half field range of a backpack design. However, a neck-band transmitter with reduced field range and life is preferred over a backpack transmitter when tracking geese and swans that are notorious for breaking antennas and removing backpack harnesses within days.