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05-17-21-WS
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05-17-21-WS
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Recommendations <br /> <br />We have determined multiple courses of action we would recommend to the City of <br />Arden Hills. They are arranged in this document in terms of Good, Better, and Best. If desired, <br />ANCOM can provide a quote to provide any of the following solutions. <br /> <br />First, we present the "Good" Solution: <br /> The receive antennas and collectors have been exposed to the elements for several years <br />now, and there may be some degradation in receive capability due to this. We could replace all <br />the receive antennas and cable assemblies with new equipment. This would rule out the <br />possibility of equipment failure as a cause of the decreased reading, but would do nothing to <br />change the way that the collectors function. The antennas that are in use are readily available as <br />are the cable assemblies, so this solution could be implemented relatively soon. This would also <br />be the lowest cost solution. However, this solution does not address that there is still an elevated <br />noise floor present, and any interference coming in to the collector would increase along with the <br />water meter transmissions. <br /> <br />Next, we will discuss the "Better" Solution: <br /> Since there is collection deficiency in a defined area of the city, our "Better" solution is to <br />replace the receive antennas with a completely different antenna system. This would involve the <br />use of directional antennas that have higher gain. Instead of utilizing the low-profile antennas <br />that are currently in place, we would install a set of directional Yagi antennas that would receive <br />water meter transmissions from a set direction. Utilizing a directed array of antennas would <br />allow us to "shape" the area of reception from a particular collector. <br /> <br />Last, we offer, for your consideration, the Best solution: <br /> This solution is to install a 4th collector in the southern area of the city. We have <br />determined that if available, a 4th collector utilizing the directional antennas would greatly <br />increase the receive area of the system. <br /> We have identified Johanna Marsh Park as a viable location for the potential 4th collector. <br />This solution would require the installation of a structure or pole that would put the collector <br />around 40 feet above the ground. This would ensure an adequate RF pathway would exist <br />between any potential water meter and the collector. <br /> We understand there are many logistical challenges that are present when trying to install <br />poles in a marshland environment, and there are certainly other locations that may be available. <br />Our recommendation is simply the most centrally located, City owned property we could find.
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