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GPS/VHF logging collars

North Star has developed a new line of GPS logging collars that log GPS positions on a pre-set schedule and store them on board for later retrieval (when the collar is recovered). These collars have a VHF transmitter built in that can be programmed to pulse on any schedule but is primarily designed to pulse toward the end of the collar life to facilitate collar retrieval on the ground. These collars are programmable and downloadable by the user via a waterproof data port on the side of the collar enclosure. Battery life is variable (measured in years) depending on battery configuration and programming schedule. Priced well under $2,000 each for even a DD-cell battery configuration, these collars are highly useful and price-competitive in cases where you can be reasonably sure of retrieving the collar from the field.

Timed Collar Release Devices
Collar Marketing Letter Jan/08
Collar Marketing Panel
Collar Pricing Guide
Reference Battery Life Calculation