05-10-2021 Council Packet - Laserfiche WebLink

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r TECHNICAL I12INIMUM SITE STANDARDS City of Orono,Minnesota Communications Sites Water Tower Antenna Site BY Jolm R DuBois P.E.,Phil Devanber 1996 1: Alt equipment must be housed in au RF tib metal enclosure that provides at least 60 db of attenuation to any internal RF signals. Desk-top base stations and open racks cannot be used without special approval;additional shielding kits may be required. 2. At least 60 db of isolation for 450 MHZ,800 MHZ,900 MHZ and 1800-2000 MHz transmittersand 30 db of isolation for 150 MHZ and 40 MHZ transmitters must be provided; a harmonic filter must be provided on the transmitters between the antenna and any ferrite device used. Additional filtering and isolation may be required and will be considered on a case-by-case basis. 3. Maximum transmitter power allowed into the antenna feed line will be 110 watts per transmitter. (Higher power levels will be considered on a case-by-case basis;additional protective devices may be required.) 4. Only jacketed copper Heliax cable will be permitted for transmission line at the site. All on-site intercabling must use RG/9,RG/142,RG/214 or 1/2 inch Superflex. RG/8 or arty other single shielded cable will not he allowed 5 Proposed transmitters that will cause second order,third order or fifth order intermodulation products on existing receiver frequencies will not be permitted on the site. A receiver with the same frequency as an existing second order, third order or fifth order intermodulation product at the site,will not be permitted on the site. 6. All transmitters shall be equipped with band-pass cavities that will provide at least the following attenuation of side band noise,if needed: 40 MHZ band: 50 db at 1 MHZ 150MHZ band: 50dbat1.5MpiZ 450 MHZ band: 50 db at 2$MHZ 800/900 MHZ ban& 50 db at 10 MHZ 1800 MHz Microwave: 50 db at 20 MHZ 7 Each cabinet must be identified by the owner's name,address and FCC station license;it also must have the name and telephone number of the responsible service agency. 8. Prior to approving any application for antenna space at the site,an engineering study will be conducted by the Communications Consulting Engineer for the City of Orono,consisting of at least the following items: a. Intermodulation interference(IM)calculations of all transmitters and receivers known to exist in the area at time of application. (Study will inehtdc 2nd,3rd and 5th order IM terms,and A+BB.C,three-product terms.) b. Transmitter noise and receiver desensing calculations of all equipment at the site. c. Analysis of best equipment and antenna locations at the site. d. Analysis of AC power requirements. e. Report to prospective site user regarding application. EXHIBIT tla