Counter Surveillance Receiver [A20301]

Counter Surveillance Receiver € 0,00

Approachable and menu-driven - a host of features for the counter-surveillance specialist!

There is in-depth analysis of the RF environment. The spectrum is scanned using a number of internal receivers simultaneously. There are automatic and manual modes of operation.

By selecting the automatic mode a range of detection and verification routines are conducted without further intervention. However, the power of the system is in its range of software-controlled manual modes of operation, putting at the fingertips of the user an advanced and extremely comprehensive toolkit.

The CSR 'learns' its ambient RF environment. This data, 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 CSR, 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.
Very Low Frequency devices such as those using power and telephone cable as a conduit can be monitored.

CSR SPECIFICATIONS:

FREQUENCY RANGE: DC to over 3GHz in two bands

VLF: DC-10MHz

VHF: 10MHz- 3GHz

FREQUENCY DISPLAY: direct digital readout of receiver frequency up to 10MHz. above 10MHz digitally displays LO frequency. 1KHz display resolution.

FREQUENCY STABILITY: quartz frequency control eliminates long term tuning drift.

SENSITIVITY: VLF: typically 2uV

VHF: typically ?80dBm

TUNING METHOD: manual (with 3 tuning rates), automatic sweep or 'lock to strongest signal' (VHF band only)

SIGNAL TYPES: demodulates signals using AM, FM (wide and narrow band) and FM with sub-carrier modulation using any sub carrier frequency.

DEMODULATORS: FM, NFM, AM and SC

SELECTIVITY: FM, SC: 350kHz

AM, NFM: 30kHz, steep skirts for good anti-snuggling performance

TONE FREQUENCIES: up to 20kHz

DISPLAYS:

MAIN DISPLAY: 2x40 character alphanumeric liquid crystal display with electro-luminescent backlighting and with contrast and brightness controls.

RED 'ALERT' LEDs: 'TNE ALERT' illuminates when the tone detectors have confirmed a 'hit'

'SIG ALERT' illuminates when signal strength analysis shows a 'hit'.

GREEN 'CHARGING' LED: flashes when battery needs recharging, stays on while charging current flows into batteries.

CONTROLS:

KNOBS: 'TUNING', 'VOLUME' (both are software controlled shaft encoders which also have secondary functions).

'SOFT KEYS': seven push buttons whose functions are software controlled and are labelled by the display screen.

OTHER KEYS: 'ON/OFF', 'VIEW' (used to assess the results of a sweep); 'SQU' (lets the volume control set the squelch threshold)

TOGGLE SWITCHES: tuning rate (3 positions), 'squeal' (3 position, controls audible signal strength indication)

CONNECTORS:

BNC CONNECTORS: 'ANT' for whip or other antenna, 'PRB' optional input for VLF receiver (automatically selected by plugging in possible future accessory unit)

JACK SOCKET: 'Personal stereo' headphone jack

CHARGER SOCKET: standard concentric input for mains charger unit or car cigarette lighter cable.

ACCESSORY CONNECTOR: 7-pin DIN socket for ranging probe loudspeaker and with digital and analogue interface for possible future expansion

POWER SUPPLY:

BATTERY PACK: built in 2.2Ah NiCad battery using 6 replaceable cells provides over 8 hours operation when fully charged.

INTERNAL CHARGING CIRCUIT: constant current (250mA) with over voltage limit. Full recharge 'from flat' takes 14 hours.

CHARGING SOURCE: accessory mains adaptor (Model MPU); car cigarette lighter socket via accessory cable; or external 12V supply.

PHYSICAL CSR is built into a fully RFI screened

aluminium case.

DIMENSIONS: 253 x 95 x 280mm

WEIGHT: 3.8kg

ACCESSORIES: ranging probe, telescopic whip antenna with BNC plug, antenna extension lead, mains charging adaptor (model MPU), headphones, and operation instructions.