Cellular Tracking Technologies provides a variety of case designs to fit your species in the most ergonomic way. Our devices include batteries that are solar rechargeable, therefore the overall device life can be extended across multiple breeding seasons. The majority of the weight and size associated with each case is based on the battery. A trade off exists between battery size and the rate at which GPS fixes can be acquired given a steady input of solar energy. The page below provides an overview of the four main cases types we offer, and provides the recommended GPS duty cycle based on the battery and solar panel size typically used with the case.
Backpack

CTT® Backpacks are our most commonly used case design and are the perfect method for a wide variety of wildlife.
Species using a backpack
- Large
Golden Eagle
American White Pelican
Wild Turkey - Medium
Snowy Owl
Imperial Eagle
Hooded Vulture - Small
Greater Sage-Grouse
Black Vulture
Turkey Vulture
Ferruginous Hawk - Extra Small
Northern Goshawk
Common Raven
Crested Caracara
Turtles
Unit specifications
- Weight Range (Based on Battery Size)
Extra Small: 25 – 30g
Small: 31 – 40g
Medium: 48 – 56g
Large: > 68g - Recommended GPS Duty Cycle
60 – 120 min
30 – 60 min
10 – 30 min
5 – 15 min - Dimensions
50 x 28 x 20 (mm)
62 x 39 x 19 (mm)
66 x 38 x 26 (mm)
101 x 44 x 27 (mm)
Additional Evolution Series Sizes
- Weight Range (Based on Battery Size)
Ultra Small: 20 – 24g
Large: > 68g - Recommended GPS Duty Cycle
60 – 120 min
5 – 15 min - Dimensions
57 x 22 x 12 (mm)
70 x 45 x 20 (mm)
Leg Mount

CTT® leg mounts have been primarily used by projects studying cranes. The case comes with a mounting bracket with band information.
Species using leg mount
- Sandhill Crane
White-naped Crane
Common Crane
Whooping Crane
Unit specifications
- Weight
Large: 45g - Recommended GPS Duty Cycle
10-30 min - Dimensions
74 x 44 x 26 (mm)
Neck Collar

The CTT® neck collar case is mounted a collar that can be pulled apart to fit around the animal’s neck. Releasing the pressure causes the collar to return to a locked state.
Species using neck collar
- Canada Goose
Greater White-fronted Goose
Mute Swan
Unit specifications
- Weight Range
Large: 30-48g - Recommended GPS Duty Cycle
30-60 min - Dimensions
52 x 39 x (12-25) (mm)
Patagial

The CTT® patagial case design has a bolt (Nylon or steel) that is attached to a base through the animal’s wing. The streamlined profile reduces drag when the bird opens its wing for flight.
Species using patagial
- California Condor
- American White Pelican
Unit specifications
- Weight
Large: 50-60g
Small: 30-40g - Dimensions
83 x 67 x 14 (mm)
50 x 45 x 14 (mm)
Ear Tag

The CTT® ear tag is a ear mounted tracking device. Its small, lightweight design can be much more suitable than collar attachments for some animals. The ear tag features a bolts to secure it to the animal’s ear.
Species using ear tag
- Mule Deer
- Cattle
- White Tail Deer
- Other species
- Weight
Large: 50-60g
Small: 30-40g - Dimensions
83 x 67 x 14 (mm)
50 x 45 x 14 (mm)
Mammal Collar

The CTT® mammal collar is intended for small to large size mammals. It features optional solar recharging and an optional collar release mechinism.
Species using mammal collar
- Wild boar
- Cattle
- Raccoon
Unit specifications
- Release
Optional release system can be engaged by either remote command, time of year, location or low battery. Release system designed for all weather conditions. - Options
Solar recharge
Long life primary battery
Weatherproof collar release