Perimeter Security Solutions - Microwave Sensors
Model 310B Long Range Microwave Link
Because Model 310B operates at K-band frequency (24.125 GHz), it
achieves performance not possible with X-band microwave links (which
operate at 10.5 GHz). Antenna beamwidth is approximately 3.5 degrees in
both the horizontal and vertical planes, allowing Model 310B to operate
at long ranges and within narrow corridors.
Each Model 310B
Transmitter and Receiver is packaged in weatherproof housings which are
only 269 mm (10.6 in) in diameter and weigh only 2 kg (4.5 lbs).
Comparable X-band systems require housings which are 609 mm (24 in) in
diameter and weigh 15.9 kg (35 lbs). This small size provides optimum
resistance to wind-loading and obvious advantages for installation and
Because K-band microwave frequency is 2.5 times higher
than X-band, the multipath signal generated by an intruder is also 2.5
times higher and detection of slow-moving intruders is correspondingly
better. With its superb beam control and higher multipath frequency,
Model 310B provides unmatched detection performance.
Loop (PLL) signal processing in the receiver increases detection
probability by alarming on partial or complete beam interruption,
increase or decrease in signal level or jamming by other transmitters.
An Automatic Gain Control (AGC) circuit permits the receiver to
compensate for varying site conditions or changes in the weather.
at K-band, which is much less crowded than X-band, Model 310B is
inherently less susceptible to outside interference from airport landing
systems, aircraft or marine radar, and other microwave intrusion
systems. Four field-selectable modulation channels with narrow band PLL
filters allow several Model 310B's to operate simultaneously without
mutual interference. Model 310B can also be stacked with an X-band link,
such as Southwest Microwave's Model 300B, with no danger of mutual
interference. This arrangement provides the ultimate in detection
performance and extremely high resistance to electronic jamming.