53
S
ECTION
12
12
C
12.1
R
S
Best Practices:
• Operate with strong radio signal strength. At least 50% strength consistently (see Systems Tray).
• Operate within 1/2 mile (0.8 km) apart including line of site (if using the standard omni-directional
antenna).
Common Interference:
• Anything that interrupts line of sight between the units. i.e. tractor trailers, bridges, heavy equipment,
elevation changes.
• Anywhere there is large amounts of rock exposed causes interference.
• Anything in the area containing a lot of structural steel.
• Close proximity to radio stations, airports, and power lines.
Dip Switch Settings:
1 Watt Radio Module
1
6
5
4
3
2
O
N
12.2
H
Where it is required:
• Weak RSSI signal strength. Less than 50% consistently (see Systems Tray).
• No line of sight. i.e. inside a parking garage, tunnels, across large steel bridges, under an overpass.
Cable Requirements:
• Minimum Cable Speci
fi
cation: Single twisted pair with a ground and braided wire; shielded. 22 AWG
conductor size. Max length of 4000 ft. (1219 m) and/or 4 splices.
• Recommended Cable: Belden Cable 3106A Multi-conductor.
• Cable may need to cross roadway overhead, by saw cuts in the road, or through a culvert.
• An alternative to these would be a cable protector channel.
