Detailed Product Description

stored in memory can be reviewed at any time and recalled on each successive room sweep. The Ranger 3 displays accurate distances to detected transmitters. An ultrasonic tone can be switched on and will not alert the eavesdropper. The sonic labelling technique, pioneered by Ranger, is a powerful method for detecting the microphones of room transmitters, ideal for use when monitoring sensitive sites.

• Continuous passive monitoring of the RF spectrum selectable to cover DC-3GHz (to 6GHz with optional probe)
• Automatic or manual verification of suspect signals.
• User interface is enhanced by its user-friendly software design.
• Quartz crystal stabilised tuning.
• Settings can be stored and recalled from memory whenever the equipment is switched on.
• Room frequency spectrum characteristic (signature) is stored in memory and can be updated at any time.
• Facility to upload a signature from, or download to a remote personal computer.
• 4 receiving circuits are in operation simultaneously. In addition to a wideband IF channel for the detection of FM and sub carrier signals there is also a narrowband IF detector with a steep sided selectivity characteristic.
• An ultrasonic tone is used to sense nearby surveillance devices without alerting those who placed them. This is undertaken for detection and distance measurements purposes.