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Koehler Cabling installed 5 miles of single-mode fiber from Davenport City Hall to the new Public Works facility. Only 2 splices were needed to accomplish this backbone.

Routing and handholes were strategically placed in the city for future connection to other municipal buildings; such as, fire stations, museums and libraries.

Typical loss on the fiber strands was less than 4 dB & the switch & data hubs required "sunglasses" (i.e. attenuators) to dim the signal.

Connecting a City


  • Koehler Cabling turn-keyed the project, which included concrete removal & restoration as well as difficult downtown excavation. Tamper-proof handholes & fiber signs were placed every 500 feet on the fiber route.
  • For interior cabling, Koehler Cabling installed over 20 miles of Lucent enhanced Category 5 cable, which was used for voice, data, video, time clocks, carbon-monoxide detection & climate control. Only the paging system required a non-Category 5 cable.
  • Cable TV was required at the new building for weather-reporting purposes. The local cable company did not have CATV available to this newly developed area.
  • CATV was brought to the building from City Hall over the single-mode fiber. From there, the City implemented video over Category 5 technology using Lucent impedance-matching video adapter cables. These video adapters allow any Category 5 outlet to become a CATV connection within minutes!


This 235,000 square-foot building consolidated 17 remote locations under a single roof and also provides indoor storage of City vehicles.

The Public Works facility is served by a single wiring closet, which contains 7 data racks & raised flooring.

All but the new site was directionally bored to minimize disturbance to neighborhoods & businesses.


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