Intersection Equipment Installation Instructions
10
3 Radio/GPS unit Installation
This section describes the installation of the radio/GPS unit. There are two models of the radio/GPS unit.
See section 3.2 for details on installing the Model 1012 Radio/GPS unit.
3.1 Model 1010 Radio/GPS unit mounting Location Considerations
Read and understand the following precautionary paragraphs before starting the installation.
• The Model 1010 radio/GPS unit should be mounted in a location that has an unobstructed view of all
approaches out to a distance of 2500 feet (762m).
• Blockage of approaches by things such as bridges, buildings, walkways, and trees should be avoided.
• The Model 1010 radio/GPS unit is usually mounted to the mast arm or span wire pole nearest the traffic
controller cabinet. If an appropriate mounting location on a mast arm or span wire pole is not available,
you can mount the unit to a span wire. Try to use a signal head or sign mount to minimize sway.
• The Model 1010 radio/GPS unit should be mounted level and as high as possible. Do not mount the
unit upside down.
• The Model 1010 radio/GPS unit should have an unobstructed view of at least 50% of the sky.
• The mounting location should be such that the cable run from the radio/GPS unit to the phase selector
(located in the traffic controller cabinet) is no more than 250 feet (76m).
• The radio/GPS cable may be run through conduit or attached to a messenger wire. The cable should
not be suspended unsupported.
• The Model 1010 radio/GPS unit should be oriented such that the cable retainer is facing an area from
which vehicles will NOT be approaching. See Figure 3-1.
• Do not paint the Model 1010 radio/GPS unit cover. Metals or metal oxides in the paint may interfere with
GPS reception and/or radio reception/transmission.
• Do not modify the radio/GPS unit circuitry. There are no user-serviceable parts inside.
IMPORTANT NOTE
Modifying the radio/GPS unit may seriously
damage the equipment and void the warranty.
Do not attempt to modify the radio/GPS
circuitry in any way. Modifying the radio and/or
antenna in any way may cause the radio to
violate FCC/IC requirements.
REMARQUE IMPORTANTE
La modification du système radio/GPS risque
d’endommager sérieusement le matériel et
d’annuler la garantie. Ne pas tenter de modifier
les circuits du système radio/GPS de quelque
façon que ce soit. En modifiant le système radio
et/ou l’antenne de quelque façon que ce soit, la
radio risque de ne plus répondre aux exigences
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