The Rainier-S20 is a solar-powered, GPS-equipped Argos transmitter (PTT) tag specifically designed for birds. The Rainier-S20 is suitable for birds weighing as little as 650 grams to be tracked with GPS precision and accuracy over land and sea for multiple seasons.
The Rainier-S20 has a very low profile and sports a flexible antenna, a smooth, rounded surface, and no cutting edges to minimize mass, drag, and risk of injury. The tag’s intelligent, low-power design incorporates our latest Argos-certified transmitter, a 48-channel GPS receiver, temperature, battery voltage and accelerometer sensors, 128 MB non-volatile memory, LIPO chemistry battery, and memory metal (nitinol) Argos antenna in a small, solid cast 20 g package that withstands 100 m dive depth in salt water.
Below are the physical specifications of the Rainier-S20.
|Dimensions(LxWxH)||56 mm x 17 mm x 14 mm|
|Weight in air||20 grams|
|Construction||Solid cast, hermetically sealed in biologically inert epoxy resin and/or urethane|
|Antenna||GPS ceramic patch antenna 9×9 mm embedded. Argos antenna stranded nitinol (memory metal), 200 mm. Protrudes from the back at 30° to the horizontal|
|Pressure rating||Tested to 100 m depth in sea water|
|Memory/Archive||128 MB FRAM non-volatile storage. Approximately 58,000 locations time stamped to the nearest second|
|Operating Frequency||401.678 MHz|
|Operating Life||Solar tags >3 years|
|Sensors||GPS, temperature, battery voltage, accelerometer, tilt|
|GPS Horizontal Position Accuracy||Rated accuracy of <1.8 m CEP50. Coordinate positions are recorded to four decimal places yielding +/-11 m|
|Operating Temperature Range||Range: 0° C to 45° C|
|Communications||Via USB port and Tag Agent software|
|Battery Charging||Solar or USB|
|Recovery Pinger||Optional in future designs, not currently activated|
|RF Power Output||Maximum 500 mW, typically 200 mW when deployed|
|Tag On/Off Protocol||Using a magnet|
|Supply Voltage||3.2 to 4.3 volts|
Here are some of the key features of the Rainier-S20.
- Specific avian design—one size fits all with no need for different dimensions for bigger birds. The rounded edges of the tag allow for streamlined aerodynamics while preventing any bird damage. We also offer either harness loops or holes for attachment depending on your preference.
- Memory metal antenna—stranded nitinol (memory metal) antenna is strong and flexible. The antenna is anchored in epoxy resin with a ferrule crimp ensuring it will withstand abuse from birds. The antenna exits to the rear of the tag making it less intrusive.
- Flexible calendar scheduling—hundreds of duty cycles if required, not limited to just five.
- Smart algorithms differentiate shifts in day length and times of civil sunrise and sunset—Rainier-S20 tags’ smart day/night algorithms accurately calculate civil sunrise and civil sunset to the minute for any location on the globe. The algorithms are integrated within the scheduling and automatically and dynamically control the scheduling which is particularly impressive on migratory birds crossing multiple time zones or on resident birds as the seasons change.
- External communications port with multiple benefits including:
- Administer your own tag setting through Wildlife Computers Tag Agent Software
- Charge your tags indoors with visual LED feedback
- Download the entire tag archive if it is located after deployment (it does not need to come back to Wildlife Computers)
- Transmitted locations and status messages—the Rainier-S20 packs up to four GPS locations in each transmitted Argos message and timestamps each to within two minutes of the actual fix. Status messages are also sent with temperature, battery voltage, and cumulative status data used to infer the basic health of the tag.