Laserfiche WebLink
3.4.4 Cost Estimate for Stand -alone 800 MHz Radio System <br /> An accurate cost estimate can only be prepared if a detailed system design is completed, <br /> however, it is possible to construct a budgetary cost estimate based on actual pricing for a <br /> somewhat similar system that was accepted for use in 1999. That system is a stand - alone, analog <br /> modulation, 800 MHz trunked radio system installed in Chester County, PA. That system <br /> consists of 15 total sites with eight sites in a single simulcast group with 11 channels, two <br /> additional simulcast groups of two sites and four channels each and three single sites with four <br /> channels each. There are 1200 radios, two redundant network controllers and a 16 hop, two -loop <br /> DS3 microwave network with loop protection. The cost of the radio system was $8,220,000 and <br /> the microwave system was $2,210,000. Following is a cost estimate for a similar system <br /> installed in Anoka County with nine sites in a single simulcast group of 11 channels. <br /> $ 8.22 Chester County radio system <br /> 2.21 Chester County microwave system <br /> +0.58 Civil work <br /> - 3.00 Nine site system reduce by six sites @ $500,000 each <br /> - 0.45 Two less simulcast groups of two sites each <br /> +0.24 200 additional radios @$1200 each <br /> +0.83 10% allowance for differing circumstances, and inflation <br /> +0.42 Sales tax on equipment <br /> +0.15 Radio Engineering <br /> $ 9.22 million TOTAL <br /> 3.5 COMMUNICATIONS LINKS TO FIXED LOCATION RADIO SITES <br /> Communications links are required to connect the dispatch center location to fixed location radio <br /> sites located throughout Anoka County. Alternative ways for providing these required <br /> communications links include a County owned microwave point -to -point radio system, County <br /> owned glass fiber connections, or leased communications facilities from Qwest <br /> Communications, Inc. <br /> Microwave has proven to be a very reliable and quality way to provide point -to -point <br /> communications links. Outages of microwave paths can and do happen due to short -term <br /> atmospheric conditions, especially heavy rain, and damage to or failure of equipment. <br /> Nevertheless, outages are rare. <br /> Glass fiber links do not suffer outages due to atmospheric or weather conditions, however, glass <br /> fiber links tend to be slightly less reliable than microwave links due to cuts in either overhead or <br /> underground cables. Outages of glass fiber communications links, like microwave links, are <br /> rare. <br /> Ronald Vegemast Engineering, Inc. -30- Report: Anoka County <br />