Pricing
| Quantity | Price (USD) |
| 25 | $89 + $60/yr data |
| 100 | $79 + $60/yr data |
| 1000 | $69 + $60/yr data |
| 10000 | $59 + $60/yr data |
Where is the Swarm M138 Modem commercially available?
This product is currently only available for online sales in the United States, Canada, United Kingdom, Ireland, Denmark, Greenland, Iceland, Germany, the Netherlands, Sweden, Spain, Austria, Australia, New Zealand, and Antarctica.
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) |