Black Box LS900-5M User Manual page 10

Long-Span Medium-Range 900-MHz Omniirectional 5-dBi Antenna
Figure 3-3. Correct positioning of omnidirectional antennas.
3.1 Antenna Polarization Display
CAUTION: When multiple 900-MHz antennas are installed in one area and
face the same direction, antennas should be spaced a minimum of
12 feet (3.75 m) apart. When multiple antennas are installed in one
area and face different directions, antennas should be spaced a mini-
mum of 5 feet (1.56 m) apart.
Page 8
Omnidirectional
antennas
Do not aim the omni-
antennas directly at
Omnidirectional
antenna
RIGHT
Omnidirectional
antenna
RIGHT
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WRONG!
each other
Omnidirectional
antenna
Omnidirectional
antenna