
Perimeter Security Solutions - Microwave Sensors
Model 316 Long Range Microwave Link
Because Model 316 operates in the K-band frequency band, it achieves
performance not possible with X-band microwave links (which operate
between 9.4 and 10.8 GHz). Antenna beam-width is approximately 3.5
degrees in both the horizontal and vertical planes, allowing the Model
316 to operate at long ranges and within very narrow corridors. The 316
fully complies with EC emission requirements of EN300 440.
Each
Model 316 Transmitter and Receiver is packaged in weatherproof housings,
which are only 269 mm (10.6 in) in diameter and weigh only 2.0 kg (4.5
lbs). Comparable X-band systems require housings which are over twice as
large. This small size provides optimum resistance to wind-loading and
obvious advantages for installation and shipping.
Because its
K-band microwave frequency is 2.5 times higher than X-band, the
multipath signal generated by an intruder is 2.5 times higher and
detection of slow-moving intruders is correspondingly better. With its
superb beam control and higher multipath frequency, Model 316 provides
unmatched detection performance.
Narrow band receiver design
increases detection probability by alarming on partial or complete beam
interruption, increase or decrease in signal level or jamming by other
transmitters. Its Automatic Gain Control (AGC) circuit permits the
receiver to compensate for varying site conditions or changes in the
weather.
Operating at K-Band, which is much less crowded than
X-band, Model 316 is inherently less susceptible to outside interference
from airport landing systems, aircraft or marine radar, and other
microwave intrusion systems. Six field-selectable crystal controlled
modulation channels with narrow band filtering allow several Model 316's
to operate simultaneously without mutual interference. Model 316 can
also be stacked with an X-band link, such as Southwest Microwave Model
300B, with no danger of mutual interference. Such an arrangement
provides the ultimate in detection performance and extremely high
resistance to electronic jamming.
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