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<br />El Camino Real Traffic ¡J"gnal System City of Redwood City <br /> TABLE 2 <br /> CHARACI'ERISTICS OF WIRELESS TECHNOLOGIES <br /> FOR APPLICATION IN PETALUMA <br /> SAMPLE <br />,< ,~:~,-~~" <br />Spread Spectrum Does not require FCC license in 902 928 MHz band <br />Radio Can transit data and conwressed video <br /> Easy and flexible instalJation and maintenance <br /> Lino-of-sight is available for this application <br /> Uses low transmitter power <br /> Can be used in a mixed system of wire and other wireless intercoonections <br /> Relatively low equipment cost <br /> Potential for other City applications such as telemetry <br /> Currently in use for traffic applications in other cities <br /> Compahòle with Type 170 controllers and bas been tested with QuicNet system <br /> Relatively small unit and antenna for instalJation on signal mast arms <br /> R~nndAncy could be easily provided by adding "hot stand-by" units <br /> Requires training and more sophisticated equipment and specialized technicians <br /> than hardwire interconnection <br /> Not suitable for full motion video transmission <br /> Relatively new technology for traffic compared with bardwire interconnect <br /> Requires external antennaIcable compared to radio <br />31 GHz Local frequency coordination is not required by FCC. Only federal application is <br />Microwave needed. <br /> Could be used for full motion video transmission (Model 3123 GDI) <br /> Compahòle with Type 170 controllers <br /> Relatively easy to install <br /> Can be used in a mixed system of wire and other wireless interconnections <br /> Currently in use for traffic application (Model 3100 GDI) <br /> Suitable for point-to-point application <br /> Complete direct line-of-sight is required for proposed operation <br /> Maximum range is I.S to 2.0 miles without repeater <br /> Has shown degradation of signal strength during rain storm (City of Long Beach, <br /> Las Vegas) <br /> One unit composed of transmitter and receiver/antenna on mast arm. Not easy to <br /> mAintAin, requires bucket tn1ck. <br /> Relatively higher cost than spread spectrum radio <br /> R trainin and more so histicated and s ialized technicians <br /> Meyer, Mohaddes Associates, Inc. <br /> 29 <br /> <-r <br />