Campbell Scientific's ST-20 is a Service Argos-certified platform transmitter terminal (PTT ). The ST-20 transfers data from the datalogger site to the Argos Data Collection and Location System via NOAA polar orbiting satellites. This Argos transmitter is well suited for remote meteorological and environmental data collection applications, including mobile and high-latitude installations. The ST-20 Argos transmitter is compatible with Campbell Scientific's CR800, CR850, CR1000, and CR3000 dataloggers.
Campbell Scientific combines a Telonics ST-20 transmitter module with a voltage regulator and our SDC communication interface, and puts them in a rugged case for use in remote, hostile environments.
Features
- Provides uplink capability for up to eight unique ID codes, frequencies, and repetition periods
- Supports up to seven independent Argos data buffers that can be populated in real-time
- Transmits variable-length Argos messages with either 20- or 28-bit ID codes
- Allows researchers to forego a rigorous certification process
- Includes an autorepeat feature that allows the ST-20 to repeat data without host intervention
- Provides a failsafe feature that alerts users upon communication link or host failure
- Incorporates a Campbell Scientific CS I/O SDC communication interface for connecting to our dataloggers
- Allows the ID and repetition rates to be set in real-time or by Campbell Scientific
Specifications
- Supply voltage (minimum): 2.0 V
- Supply voltage (maximum, high power): 5.0 V
- Output impedance: 50 ohms
- High power level: 1000 mW typical; 28 to 32 dbm
- Operating temperature: -40° to 70°C
- Argos transmission frequency: 401.618 to 401.680 MHz
- Current drain: 1.5 mA
- Dimensions: 7.5" x 2.25" x 1.25" (19.05 x 5.72 x 3.18 cm)
