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.
|Ordering Code||RM-1690-2H-XS (2x Ethernet, UART, GPIOs)|
RM-1690-2H-XU (2x Ethernet, USB, GPIOs)
|Evaluation Kit||EK-1690-SR (Antennas, Cables and I/O ports to facilitate quick bench testing)|
|Radio Configuration||2×2 MIMO|
|Frequency Range||1670-1710 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 Encryption||128-bit AES hardware data encryption|
256-bit AES software data encryption channel for sensitive data
|Operating Modes||Mesh, AP, Client, Transparent Bridge and Gateway|
|Command & Control channel||Ultra-Reliable Low Latency Channel (URLLC) for Command and Control data. Latency 30 ms (Typical)|
|Video Channel||Optimized 4k video streaming channel|
|Operating Voltage||5.5~42V DC|
|Dimensions||65 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.