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Stalker - Traffic Speed Sensor for Monitoring Road Traffic
The Stalker Traffic Speed Sensor is engineered to meet the demands of both moving and stationary monitoring applications, making it ideal for road traffic and speed management in mobile environments. Although not intended for use in speed enforcement within the U.S., this sensor incorporates high-performance features typically seen in law enforcement traffic radar devices. It offers speed locking and Doppler audio output capabilities. The sensor operates on a voltage range of 9-24 VDC and consumes 370 mA with the transmitter on. It functions efficiently across a wide temperature range from -22°F to +158°F. The sensor supports a configurable low-speed threshold from 1 MPH to 200 MPH, and tracks patrol speeds from 1 to 90 MPH, with advanced settings for higher thresholds. Its maximum tracking capabilities include opposite lane target speeds up to 200 MPH and same lane patrol speeds with ±70% accuracy. Featuring a microwave specification of 10 to 25 mW, the sensor is designed for high accuracy and reliability in diverse environmental conditions.
- Moving and stationary mode operation
- Direction sensing (closing/away, opposite/same-lane)
- Longest range available – up to 2 miles
- Simultaneous closing/away operation available in stationary mode
- Strongest and faster target detection in all modes
- True Doppler audio output
- Strongest and faster speed locking
- Tuning fork test mode
- Transmitter on/off control
- Speed units selectable: MPH, km/h, nautical miles/hr (knots), feet/sec, meters/sec
- Unit or tenths resolution selection
- Adjustable sensitivity, doubling suppression, squelch and audio volume
- RS-232 serial interface supporting baud rates up to 38400
- Selectable output protocols and data formats
While the Traffic Speed Sensor has features that are normally seen in law enforcement Traffic Radar, such as speed locking and Doppler audio output, it is the perfect speed sensor for any application requiring monitoring road traffic speed or speed management in a mobile environment.
- Type : Moving/Stationary Doppler Radar Speed Sensor
- Operating Frequency : 34.7 GHz (Ka-Band)
- Stability : +/-100 MHz
- Communication Interface : RS-232
- Power Requirements :
- Voltage: 9-16 VDC for SN ST6560 and below 9-24 VDC for SN ST6561 and above
- Current: (at 12 VDC nominal)
- Transmitter on: 370 mA
- Transmitter off: 100 mA
- Environmental : Operating: -22° F (-30° C) to +158° F (+70° C) , 90% relative humidity,
- Non-operating: -40° F (-40° C) to +185° F (+85° C)
- Mechanical : Weight: 1.15 lb. (0.52 kg)
- Diameter: 2.6 in. (6.7 cm)
- Length: 4.7 in. (11.8 cm)
- Case Material: Aluminum Die Cast
- Accuracy : +1, -2 MPH stationary, +2, -3 MPH moving
- +1, -2 KPH stationary, +2, -3 KPH moving
- Audio Output : A 3.3 Vpp pulse-width modulated (PWM) audio output signal is provided - must be filtered and amplified for best audio quality.
- Auto Self-Test : Performed every 10 minutes while transmitting
- Speed Range : Stationary low speed threshold configurable:
- 1 MPH to 200 MPH (1.6 to 321 KM/H)
- 12 MPH to 200 MPH (19 to 321 KM/H)
- Antenna : Conical horn
- Polarization : Circular
- 3DB Beamwidth : 12° +/- 1°
- RF Source : Gunn-Effect diode
- Receiver Type : Two Direct-Conversion Homodyne receivers using four low-noise Schottky battier mixer diodes
- Power Output :
- 10 mW minimum
- 15 mW nominal
- 25 mW maximum
- Power Density : 1 mW/cm2 maximum at 5 cm from lens