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Remote Monitoring Appliance I



  1 RU Rack Mount


The Remote Monitoring Appliance (RMA) is a small, low-power device that allows radio receivers to be deployed at remote locations and accessed via standard networking infrastructure.

Monitoring radio communications in distant areas poses unique challenges. Remote monitoring is frequently required in the public safety, law enforcement, intelligence, military, two-way and broadcast communities. By locating a radio receiver at a remote site, the coverage area can be extended beyond the existing radio horizon, or around the world.

The small size and low power requirements of the RMA allow it to be easily deployed in harsh environments. Using satellite data links and solar power, radio receivers can be placed almost anywhere.


The RMA directly controls up to two radios via serial ports, and digitizes received audio for transmission to the base station. The RMA communicates with the Spectrum Sentry base station software via a network link using the RCIP protocol. RCIP is a proprietary high level protocol developed by Signal Intelligence to provide command, control and voice over IP capabilities using standard network connections.

Since the RCIP protocol works over any IP network, a wide variety of networks can be used. Possibilities include DSL, wireless Ethernet, LAN, WAN, microwave, satellite or the Internet.

Designed for High Availability

The RMA device is designed for high reliability and availability. With the exception of the temperature activated automatic cooling fan, the RMA contains no moving parts. The low power design assures that the cooling fan is needed only in extreme environmental conditions. A hardware implemented watchdog timer protects against lock-ups caused by transient conditions.

Easy Configuration

Managing the RMA device is simple, and can be performed remotely via a standard telnet connection over the network, or locally via the console RS-232 port. The telnet and console connections are password protected.


DC power (AC converter supplied)
WAN port 10/100 Base-T Ethernet
Audio inputs (2)
RS-232 receiver control ports (2)

Supported Software

The RMA I is for use only with Spectrum Sentry™.

Supported Receivers

The RMA I device supports the Uniden™ BC-796D and BC-785D.