
Swarm M138 Modem
Transmits and receives 2-way data via Swarm’s satellite network.
Designed to be embedded into a third-party IoT device.
Data delivered via a REST API or Webhook to any cloud service.
An annual Swarm data plan is required to utilize the Swarm network.
Specifications
Dimensions | 51.0 x 30.0 x 5.3 mm |
Mass | 9.6 g |
Components | GPS, VHF radio with integrated T/R switch U.FL connectors for GPS and VHF antennas ARM Cortex-M4 processor Indicator LEDs CMOS serial UART interface 3.3V GPIO |
Sensors | Onboard GPS (lat/lon/alt) |
Power | Sleep mode: 3.3 V, 80 uA (max) Receive mode: 3.3 V, 26 mA (typ), 40 mA (max) Transmit mode: 3.3V, 850 ma (typ), 1000 mA (max) |
Environment | Operational: -40 C to +85 C Storage: -40 C to +85 C |
Module protocol | Data sent to the Modem should be formatted into a hex-ascii string. Two-letter NMEA-like commands are sent to a 3.3V CMOS serial UART. |
Data rate | 1 kbps |
Frequency | 137-138 MHz (downlink) 148-150 MHz (uplink) |