WSVI-DT Comprehensive Engineering Exhibit.Pdf
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SMITH AND FISHER EXHIBIT A ENGINEERING STATEMENT The engineering data contained herein have been prepared on behalf of ALPHA BROADCASTING CORPORATION, licensee of digital television station WSVI-DT, Channel 20 in Christiansted, Virgin Islands, in support of its Application for Construction Permit to specify operation at a new transmitter site. This proposal results from the devastation of the licensed transmitter site from a hurricane a few months ago. It is proposed to mount an ERI omnidirectional antenna at the 42.7-meter level of an existing 48.8-meter tower. Exhibit B-1 is a map upon which the predicted service contours for this new facility are plotted. Exhibit B-2 is a map showing the relationship between the licensed and proposed noise-limited contours. As shown, the proposed WSVI-DT facility does not cover any more land area than that of the licensed facility. To the extent that the proposed service contour extends beyond that of the licensed facility entirely over water, a waiver of the present Commission freeze on the filing of applications resulting in an extension of contour in any direction is respectfully requested and believed to be justified under the circumstances described herein. An elevation pattern for the proposed ERI omnidirectional antenna is included in Exhibit C. Exhibit D contains the summary results from a TVStudy interference study, which was conducted using a cell size of 2.0 kilometers and increment spacing of 1.0 kilometer. It concludes that the proposed WSVI-DT facility meets the Commission’s de minimis interference criteria to all co-channel and adjacent-channel pre-repack and post-repack full-power and Class A facilities. A detailed power density calculation is provided in Exhibit E. SMITH AND FISHER EXHIBIT A Since no change in the overall height or location of the existing tower is proposed herein, the Federal Aviation Administration has not been notified of this application. In addition, the Commission has assigned Antenna Structure Registration Number 1210980 to this tower. I declare under penalty of perjury that the foregoing statements and the attached exhibits, which were prepared by me or under my immediate supervision, are true and correct to the best of my knowledge and belief. KEVIN T. FISHER March 4, 2019 Smith and Fisher, LLC Charlotte Amalie o Culebra aras PROPOSED WSVI-DT NOISE-LIMITED CONTOUR Esperanza PROPOSED WSVI-DT CITY-GRADE CONTOUR WSVI-D Proposed Site Christiansted EXHIBIT B-1 PREDICTED SERVICE CONTOURS Scale 1:800,000 mi PROPOSED WSVI-DT 0 8 16 24 CH. 20 - CHRISTIANSTED, VIRGIN ISLANDS V-Soft Communications LLC ® © Smith and Fisher, LLC Charlotte Amalie o Culebra LICENSED WSVI-DT aras NOISE-LIMITED CONTOUR Esperanza PROPOSED WSVI-DT NOISE-LIMITED CONTOUR WSVI-D Proposed Site Christiansted EXHIBIT B-2 CONTOUR COMPARISON Scale 1:800,000 mi LICENSED AND PROPOSED WSVI-DT 0 8 16 24 CH. 20 - CHRISTIANSTED, VIRGIN ISLANDS V-Soft Communications LLC ® © AL8OC-20-H Page 1 ELEVATION PATTERN Type: AL8 Channel: 20 Directivity: Numeric dBd Location: Main Lobe: 8.68 9.39 Beam Tilt: 1.75 Horizontal: 7.17 8.56 Polarization: Horizontal 1.0 0.9 0.8 0.7 0.6 0.5 Relative Field 0.4 0.3 0.2 0.1 0.0 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Preliminary, subject to final design and review. EXHIBIT D TVSTUDY INTERFERENCE ANALYSIS RESULTS PROPOSED WSVI‐DT CHANNEL 20 – CHRISTIANSTED, VIRGIN ISLANDS Study created: 2019.03.04 11:42:15 Study build station data: LMS TV 2019‐02‐28 Proposal: WSVI D20 DT LIC CHRISTIANSTED, VI File number: BLCDT20090603AFN Facility ID: 2370 Station data: User record Record ID: 462 Country: U.S. Zone: II Stations potentially affected by proposal: IX Call Chan Svc Status City, State File Number Distance No WQTO D19 DD CP PONCE, PR BLANK0000028318 205.8 km No WQTO D19 (D25) DD BL PONCE, PR DTVBL2175 205.8 No WOST D20 DT LIC MAYAGUEZ, PR BLANK0000058703 232.2 No WJPX D21 DT LIC SAN JUAN, PR BLANK0000030022 122.9 No WZVI D21 DT CP CHARLOTTE AMALIE, VI BLANK0000034334 65.5 No WZVI D21 DT LIC CHARLOTTE AMALIE, VI BLANK0000067338 65.5 No non‐directional AM stations found within 0.8 km No directional AM stations found within 3.2 km Record parameters as studied: Channel: D20 Latitude: 17 44 40.90 N (NAD83) Longitude: 64 50 3.50 W Height AMSL: 317.0 m HAAT: 290.0 m Peak ERP: 1.01 kW Antenna: Omnidirectional Elev Pattrn: Generic Elec Tilt: 1.75 39.4 dBu contour: Azimuth ERP HAAT Distance 0.0 deg 1.01 kW 317.0 m 56.2 km 45.0 1.01 310.9 55.9 90.0 1.01 258.5 53.0 135.0 1.01 310.2 55.9 180.0 1.01 310.6 55.9 225.0 1.01 294.5 55.0 270.0 1.01 289.9 54.7 315.0 1.01 317.0 56.2 Database HAAT does not agree with computed HAAT Database HAAT: 290 m Computed HAAT: 301 m Distance to Canadian border: 3010.8 km Distance to Mexican border: 3424.4 km Conditions at FCC monitoring station: Santa Isabel PR Bearing: 280.3 degrees Distance: 165.6 km Proposal is not within the West Virginia quiet zone area Conditions at Table Mountain receiving zone: Bearing: 311.4 degrees Distance: 4591.9 km No land mobile station failures found Study cell size: 2.00 km Profile point spacing: 1.00 km Maximum new IX to full‐service and Class A: 0.50% Maximum new IX to LPTV: 2.00% No IX check failures found. SMITH AND FISHER EXHIBIT E POWER DENSITY CALCULATION PROPOSED WSVI-DT CHANNEL 20 – CHRISTIANSTED, VIRGIN ISLANDS Since the FCC considers the possible biological effects of RF transmissions in its environmental determinations, we have studied the matter with respect to this Christiansted facility. Employing the methods set forth in OET Bulletin No. 65 and considering a main-lobe effective radiated power of 1.01 kW, an antenna radiation center 42.7 meters above ground, and the specific elevation pattern of the proposed ERI antenna, maximum power density two meters above ground of 0.00017 mW/cm2 is calculated to occur 21 meters from the base of the tower. Since this is less than 0.1 percent of the 0.34 mW/cm2 reference for uncontrolled environments (areas with public access) surrounding a facility operating on Channel 20 (506- 512 MHz), a grant of this proposal may be considered a minor environmental action with respect to public exposure to non-ionizing electromagnetic radiation. Further, the station owner will take whatever precautionary steps are necessary, such as reducing power or leaving the air temporarily, to ensure that workers operating in the vicinity of the antenna are not exposed to excessive non-ionizing radiation. .