Smart Radio RM-1690 Summary Datasheet

The 1690 MHz band ranges from 1670~1710 MHz. Operations in the 1690 MHz band consist of military tactical radio relay, air combat training systems, tracking, telemetry, and control data communications for control of spacecraft. Federal agencies and the military also use this band for law enforcement video surveillance and robotics, terrestrial telemetering operations for aircraft, missile flight testing, fixed point-to-point microwave relay communications and unmanned aerial systems.

This band’s transmission characteristics make it desirable to achieve a good balance of range and penetration for mobile ground-based robots. The RF signals at 1690 MHz have the ability to propagate further distances via two mechanisms: penetration and diffraction. Penetration refers to 1690 MHz waves ability to penetrate through building walls, vegetation and other obstacles. 1690 MHz waves can go through multiple building walls making it an excellent choice for applications that do not have a direct line of sight between sender and receiver. Diffraction describes the characteristic of a 1690 MHz wave that it can go around an object such as a building or vegetation. 1690 MHz waves have smaller Fresnel zone.

The Smart Radios in Xtreme category can meet various stringent Federal project requirements. The table below provides quick overview of their technical specifications. Refer to the detailed datasheet for more details.

Summary of Technical Specifications (RM-1690)

Ordering Code
RM-1690-2H-XS (2x Ethernet, UART, GPIOs)
RM-1690-2H-XU (2x Ethernet, USB, GPIOs)
Evaluation KitEK-1690-SR (Antennas, Cables and I/O ports to facilitate quick bench testing)
Radio Configuration2×2 MIMO
Frequency Range1670-1710 MHz
Channel Bandwidths (Software Select-able)
3, 5, 10, 20 MHz
Max Data Throughput (UDP)100 Mbps
Max Operating Range (Indicative)>20 Km
Wireless Data Encryption128-bit AES hardware data encryption
256-bit AES software data encryption channel for sensitive data
Interference ImmunityMaximum
Operating ModesMesh, AP, Client, Transparent Bridge and Gateway
Command & Control channelUltra-Reliable Low Latency Channel (URLLC) for Command and Control data. Latency 30 ms (Typical)
Video ChannelOptimized 4k video streaming channel
MulticastHigh Rate
Operating Voltage5.5~42V DC
Dimensions65 x 57 x 11 mm, 60 grams
Temperature range (Operating)-40°C to +85°C
Special Features– Extended lifespan with 7 years’ planned availability
– Extreme Reliability, IPC Class 2 standard with Class 3 options
– Compliant to MIL-STD-202G for high shock/vibration environments

* Specifications are subject to change without prior notice.

Design-In Documents

Doodle Labs provides an extensive set of documents and support to simplify integration of the Smart Radio. Please visit our Smart Radio Technical Library for more information.