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City of Lynnwood. Wireless Communication in the ITS network Dick Adams, PE, PTOE. Wireless Communication Fiber Network. Wireless Communication How Wireless Fits In. Fiber network is 95% installed Needed Temporary connection Most critical equipment is IP based Need High Throughput

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City of Lynnwood

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City of lynnwood

City of Lynnwood

Wireless Communication in the ITS network

Dick Adams, PE, PTOE

Wireless communication fiber network

Wireless CommunicationFiber Network

Wireless communication how wireless fits in

Wireless Communication How Wireless Fits In

  • Fiber network is 95% installed

  • Needed Temporary connection

  • Most critical equipment is IP based

  • Need High Throughput

  • Cost effective

  • Ease of installation and configuration

Wireless communication the design of wireless

Wireless Communication The Design of Wireless

  • Researched 6 different manufacturers

  • Wanted Point 2 Point

  • Encryption Ethernet Bridge

  • PTZ standard is NTSC, needed to covert to IP or purchase new PTZ

Wireless communication making the choice

Wireless Communication Making the Choice

  • Maxstream Xpress Ethernet Bridge

    • Throughput : 15 Mbps

    • Interference possible on the 900 Mhz

    • $390 per pair of modems

  • Needed in house Design for Antennas

    • Yagi antennas - 40 miles Line of Sight

      • Low Loss cable with 50 Ohm impedance

        Paul Coffelt, PE - ITS Engineer

Wireless communication maxstream

Wireless Communication Maxstream

Wireless communication field devices

Wireless Communication Field Devices

Wireless communication encoders decoders

Wireless Communication Encoders - Decoders

  • Convert NTSC to MPEG

    Or Motion JPEG

  • IP addressable

  • Web based IP programming

  • Single or 4 video signal versions

  • Ethernet with Serial port for control

  • Up to 30 fps possible

  • With Wireless we use 3 fps per channel

Wireless communication axis screen capture

Wireless Communication Axis Screen Capture

Wireless communication location of bridge

Wireless Communication Location of Bridge

2600 ft

Wireless communication central ip network

Wireless Communication Central IP Network


Fiber Modem

To the Field

Managed Switch

3 X 48 ports

Web Browser

AXIS Decoder


Video Matrix Switch



Wireless communication field locations ip network

Wireless Communication Field Locations IP Network

To Central



AXIS Decoder

Fiber Modem


Ethernet Switch

Ethernet Switch

Video Detection




Power over


Power over




Wireless communication questions

Wireless Communication Questions?

Thank You

Dick Adams, PE, PTOE

Paul Coffelt, PE

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