Agilent Technologies' N6841A RF Sensor is a software-defined, network-based receiver housed in a compact, weatherproof enclosure with a wide operating temperature range suitable for outdoor deployments. Multiple receivers may be combined to form RF sensor networks to improve detection, monitoring and geolocation of emitters in commercial, radio regulatory, security and defense applications. The receiver monitors signals over a frequency range of 20 MHz to 6 GHz using a 14-bit ADC to accurately digitize signals with a 20 MHz information bandwidth. A 512 MB signal capture memory buffer follows the ADC and signal processing. Receivers may be tightly synchronized using the optional GPS receiver or via the network interface, providing both measurement synchronization and accurate time-stamping of measurement data. The network interface allows the sensors to be distributed within a building, throughout a city or across the world. The weatherproof IP67-rated (Standard IEC 6529 International Protection 67) enclosure and wide operating temperature range of -35°C to +55°C (-31°F to 131°F) allow this unit to withstand harsh environments. The small, low-profile form factor -- about the size of a laptop -- offers many discreet deployment and mounting options, including pole-top or wall-mount. Co-locating the sensor with the antenna also helps minimize signal loss due to coaxial cable attenuation. The receiver is convection cooled and contains no moving parts.