HATFIELD & DAWSON THOMAS M. E CKELS, PE CONSULTING ELECTRICAL ENGINEERS TELEPHONE (206) 783-9151 STEPHEN S. L OCKWOOD, PE FACSIMILE (206) 789-9834 DAVID J. P INION, PE 9500 G REENWOOD AVE. N. E-MAIL [email protected] ERIK C. S WANSON , PE SEATTLE, WASHINGTON 98103 MAURY L. H ATFIELD , PE THOMAS S. G ORTON, PE (1942-2009) PAUL W. LEONARD , PE (1925-2011) JAMES B. H ATFIELD, PE BENJAMIN F. D AWSON III, PE CONSULTANTS Engineering Statement Displacement of KTFF-LD Channel 31 at Fresno, CA May 2018 This Engineering Statement has been prepared on behalf of Unimas Fresno LLC (“Unimas”), licensee of digital LPTV station KTFF-LD at Fresno, California. This material has been prepared in connection with a displacement application. I. Background The translator currently operates on a channel above Channel 36, which will be the highest channel remaining for terrestrial television broadcasting per the results of the 2017 spectrum auction. Accordingly, Unimas is filing this displacement application during the Commission’s Special Displacement Window, which is scheduled for April 10 to June 1, 2018. II. Interference Study Study has been made of all cochannel and adjacent-channel facilities in the vicinity of the proposed operation, including a detailed Longley-Rice interference study to demonstrate that the proposed operation will not cause interference to any authorized or pending proposed facilities. This study was performed using the Commission’s TVStudy software. The results of this study indicate that the proposed facility is predicted to cause zero additional interference to any of the listed stations. Based on the foregoing interference study, it is believed that the proposed facility can operate without risk of interference to other stations. Hatfield & Dawson Consulting Engineers This study excludes application #0000054276 for KVHF-LD on Channel 31 at Fresno, which (like the instant application) is a displacement application filed during the Special Displacement Window. These applications would be considered to be simultaneously-filed under the terms of the Special Displacement Window. Study created: 2018.05.30 14:17:12 Study build station data: LMS TV 2018-05-30 (130) Proposal: KTFF-LD D31 LD APP FRESNO, CA File number: FRESNO31-KBBU210 Facility ID: 23272 Station data: User record Record ID: 567 Country: U.S. Build options: Protect pre-transition records not on baseline channel Individual records excluded: 0000054276 KVHF-LD D31 LD APP *P FRESNO, CA BLANK0000054276 Stations potentially affected by proposal: IX Call Chan Svc Status City, State File Number Distance No K27DV N27z TX LIC CROWLEY LAKE-LONG VA, CA BLTTL19940429JZ 98.6 km No K27GZ N27+ TX LIC MARIPOSA, CA BLTT20020221AAJ 73.4 Yes KFSN-TV D30 DT APP FRESNO, CA BPCDT20121206AAP 0.5 Yes KFSN-TV D30 DT LIC FRESNO, CA BLCDT20110914ABW 0.5 No K29KS-D D30 LD CP GUSTINE, CA BNPDTL20100910ABU 140.3 No K30FS-D D30 LD LIC HAWTHORNE, NV BLDTT20101122AJR 165.1 Yes KBTF-CD D31 DC LIC BAKERSFIELD, CA BLDTA20100921ABW 194.9 Yes KBTF-CD D31 DC CP BAKERSFIELD, CA BLANK0000035951 192.0 No KFMS-LD D31 LD APP KEYES, CA BLANK0000051634 250.8 Yes KCBS-TV D31 DT CP LOS ANGELES, CA BLANK0000034593 338.8 Yes KTLA D31 DT LIC LOS ANGELES, CA BLCDT20050713ACE 339.5 Yes K31MN-D D31 LD CP MODESTO, CA BDCCDTT20120726ABW 154.6 Yes KTVU D31 DT CP OAKLAND, CA BLANK0000034500 277.3 No K42HL-D D31 LD APP OROVILLE, CA BLANK0000030068 336.8 No K31MB-D D31 LD LIC RIDGECREST, CA BLANK0000004746 225.5 No KMSX-LD D31 LD APP SACRAMENTO, CA BLANK0000052053 255.3 No KMUM-CD D31 DC LIC SACRAMENTO, CA BLDTA20131219BOH 255.3 Yes K38JP-D D31 LD APP SALINAS, CA BLANK0000051906 204.1 No KBCW D31 LD APP SAN FRANCISCO, CA BDRTCDT20090630AEG 277.2 Yes K31KE-D D31 LD LIC SAN LUIS OBISPO,ETC., CA BLDTT20121220AAO 219.7 No KBAB-LD D31 LD APP SANTA BARBARA, CA BLANK0000052475 287.2 No K31AD N31 TX LIC VICTORVILLE, ETC., CA BLTT19900108IL 334.9 No NEW D31 LD APP AUSTIN, NV BNPDTT20091124ADN 308.7 No K31LJ-D D31 LD CP CARSON CITY, NV BNPDTL20090825BND 232.3 No K31KI-D D31 LD LIC ROUND MOUNTAIN, NV BLDTT20111005AAT 275.5 No K31BM-D D31 LD LIC SILVER SPRINGS, NV BLDTT20100621ABA 268.5 No K31KH-D D31 LD CP STATELINE, NV BDFCDTL20090824ABT 213.4 No K31KH-D D31 LD LIC STATELINE, NV BLDTL20110418ABC 214.4 No KPMC-LD D32 LD APP BAKERSFIELD, CA BLANK0000053774 192.0 Yes KVPT D32 DT CP FRESNO, CA BLANK0000034281 38.7 Yes KJEO-LD D32 LD LIC FRESNO, CA BLDTL20090826AAX 0.1 No KFKK-LD D32 LD LIC Modesto, CA BLANK0000008127 137.2 No KFKK-LD D32 LD CP Modesto, CA BLANK0000008174 154.6 No KION-TV D32 DT APP MONTEREY, CA BLANK0000035685 203.9 No KION-TV D32 DT LIC MONTEREY, CA BLCDT20030604ACO 203.9 No K50LZ-D D32 DC CP SAN LUIS OBISPO, CA BLANK0000034460 219.7 No KGOF-LP N33- TX LIC FRESNO, CA BLTTL20030310BBU 38.7 No KSRW-LP N33- TX LIC MAMMOTH LAKES, ETC., CA BLTTL20000121ABA 97.8 No KMCF-LD N35z TX LIC VISALIA, CA BLTTL20030303ACQ 102.1 No non-directional AM stations found within 0.8 km No directional AM stations found within 3.2 km Record parameters as studied: Channel: D31 Mask: Stringent Latitude: 37 4 21.80 N (NAD83) Hatfield & Dawson Consulting Engineers Longitude: 119 25 54.40 W Height AMSL: 1412.0 m HAAT: 0.0 m Peak ERP: 15.0 kW Antenna: SCA-1X1KBBU (ID 20717) 210.0 deg Elev Pattrn: Generic 50.4 dBu contour: Azimuth ERP HAAT Distance 0.0 deg 0.006 kW 508.9 m 20.0 km 45.0 0.096 112.6 18.6 90.0 0.037 -61.8 7.7 135.0 0.122 481.7 35.3 180.0 7.35 816.4 68.2 225.0 12.4 1000.6 75.5 270.0 1.09 932.4 57.3 315.0 0.030 912.7 34.3 Database HAAT does not agree with computed HAAT Database HAAT: 0 m Computed HAAT: 588 m Distance to Canadian border: 1283.7 km Distance to Mexican border: 529.6 km Conditions at FCC monitoring station: Livermore CA Bearing: 290.2 degrees Distance: 217.5 km Proposal is not within the West Virginia quiet zone area Conditions at Table Mountain receiving zone: Bearing: 70.3 degrees Distance: 1275.8 km Study cell size: 1.00 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% ---- Below is IX received by proposal FRESNO31-KBBU210 ---- **MX with BPCDT20121206AAP APP scenario 1, 2.52% interference received Proposal receives 2.52% interference from scenario 2 **MX with BPCDT20121206AAP APP scenario 3, 2.50% interference received Proposal receives 2.50% interference from scenario 4 Interference indicated as “received” by this proposal originates from a long-pending modification application by KFSN-TV, and is expressly consented to by Unimas. III. RF Exposure Study The power density calculations shown below were made using the techniques outlined in OET Bulletin No. 65. "Ground level" calculations in this report have been made at a reference height of 2 meters above ground to provide a worst-case estimate of exposure for persons standing on the ground in the vicinity of the tower. The equation shown below was used to calculate the ground level power density figures from each antenna. 2 3340981.()× AdjERP Watts S(/)µ W cm = D2 Where: AdjERP(Watts) is the maximum lobe effective radiated power times the element pattern factor times the array pattern factor. D is the distance in meters from the center of radiation to the calculation point. Hatfield & Dawson Consulting Engineers Power density levels produced by the proposed facility were calculated for an elevation of 2 meters above ground (41 meters below the antenna radiation center). The worst case power density levels occur at depression angles between 45 and 90 degrees below the horizontal. The calculations in this report assume a worst-case relative field value of 0.125 at these angles, based on the manufacturer’s vertical plane pattern for the horizontally-polarized Kathrein 2X1KBBU antenna proposed in this application. This relative field value yields a worst-case adjusted average effective radiated power of 234.4 watts at depression angles between 45 and 90 degrees below the horizontal. Assuming this power and the shortest distance between the antenna radiation center and 2 meters above ground level (i.e. straight down), the highest calculated power density from the proposed antenna alone occurs at the base of the antenna support structure. At this point the power density from the proposed facility is calculated to be 4.7 µW/cm², which is 1.2% of 381.3 µW/cm² (the FCC maximum for uncontrolled environments at the Channel 31 frequency). These calculations show that the maximum calculated power density produced at two meters above ground level by the proposed operation alone is less than 5% of the applicable FCC exposure limit at all locations between 1 and 500 meters from the base of the antenna support structure. Section 1.1307(b)(3) of the Commission's Rules excludes applications for new facilities or modifications to existing facilities from the requirement of preparing an environmental assessment when the calculated emissions from the applicant’s proposed facility are predicted to be less than 5% of the applicable FCC exposure limit. Therefore, the proposed facility is in compliance with Section 1.1301 et seq and no further analysis of RF exposure at this site is required in this application. Pursuant to OET Bulletin No.