ENGINEERING EXHIBIT

Incentive Auction Channel Reassignment

Application for Minor Modification of Digital Construction Permit prepared for

Gray Television Licensee, LLC WFXU(DT) Live Oak, FL Facility ID 22245 Ch. 17 13.4 kW 124 m

Gray Television Licensee, LLC (“Gray”) is the licensee of digital television station WFXU(DT), Channel 48, Facility ID 22245, Live Oak FL. Reassignment of WFXU from Channel 48 to Channel 17 was specified in the Incentive Auction Closing and Channel Reassignment Public Notice (“CCRPN” , DA 17-317, released April 13, 2017). A Construction Permit (“CP” file# 0000026640) authorizes WFXU to operate on Channel 17 at 11.6 kW (“ERP”) with a directional antenna at 133 meters height above average terrain (“HAAT”). Gray proposes herein a minor modification of the reassignment CP to specify a reduction of antenna height, increased ERP, and a different directional antenna pattern.

As with the current authorization, the proposed Channel 17 operation will employ a new antenna system to be side-mounted on the WFXU tower in lieu of the existing Channel 48 antenna. The tower structure corresponds to FCC Antenna Structure Registration number 1056705. No change to the overall structure height will result. As proposed herein, the antenna will be centered 137.5 meters above ground level (“AGL”), which is a 9.4 meter reduction from the currently authorized antenna height of 146.9 meters AGL. The resulting antenna HAAT is 124 meters.

The proposed antenna is a horizontally polarized directional Dielectric model TLP-16J. The proposed ERP is increased to 13.4 kW, commensurate with the reduction in antenna height in order to maintain the maximum coverage contour distance. The directional antenna’s azimuthal and elevation patterns are depicted in Figures 1 and 2, respectively.

Engineering Exhibit Gray Television Licensee, LLC (WFXU) (page 2 of 3)

Figure 3 supplies a map that demonstrates compliance with §73.625(a)(1) regarding coverage of the entire principal community. The proposed facility’s predicted population exceeds 95 percent of the CCRPN baseline facility’s population.

The presently authorized WFXU facility and associated noise limited service contour (“NLSC”) matches those of the CCRPN facility. Owing to the different directional antenna pattern, the modification sought herein provides an NLSC which exceeds that of the CCRPN facility in some azimuths but does not result in any NLSC loss area. A comparison map of the WFXU reassignment, authorized, and proposed NLSC is provided as Figure 4.

Interference study per FCC OET Bulletin 69 1 shows that the proposal complies with the 0.5 percent limit of new interference caused to pertinent nearby post-auction full service and Class A television stations and reassignments as required by §73.616. The interference study output report is provided as Table 1.

Human Exposure to Radiofrequency Electromagnetic Field (Environmental) The proposed operation was evaluated for human exposure to RF energy using the procedures outlined in the FCC’s OET Bulletin Number 65. Based on OET-65 equation (10), and considering 20 percent antenna relative field in downward elevations (pattern data shows less than 20 percent relative field at angles 10 to 90 degrees below the antenna), the calculated signal density near the tower at two meters above ground level attributable to the proposed facility is 1.0 µW/cm 2, which is 0.3 percent of the general population/uncontrolled maximum permitted exposure limit. This is well below the five percent threshold limit described in §1.1307(b) regarding sites with multiple emitters, categorically excluding the applicant from responsibility for taking any corrective action in the areas where the proposal’s contribution is less than five percent.

1FCC Office of Engineering and Technology Bulletin number 69, Longley-Rice Methodology for Evaluating TV Coverage and Interference , February 6, 2004. This analysis employed the FCC’s current “TVStudy” software with the default application processing template settings, 2 km cell size, and 1 km terrain increment. Comparisons of various results of this computer program (run on a Mac processor) to the FCCs implementation of TVStudy show excellent correlation.

Engineering Exhibit Gray Television Licensee, LLC (WFXU) (page 3 of 3)

The general public will not be exposed to RF levels attributable to the proposal in excess of the FCC’s guidelines. RF exposure warning signs will continue to be posted. With respect to worker safety, the applicant will coordinate exposure procedures with all pertinent stations and will reduce power or cease operation as necessary to protect persons having access to the site, tower, or antenna from RF electromagnetic field exposure in excess of FCC guidelines. This exhibit is limited to the evaluation of exposure to RF electromagnetic field. No increase in structure height is proposed.

List of Attachments Figure 1 Antenna Azimuthal Pattern Figure 2 Antenna Elevation Pattern Figure 3 Proposed Coverage Contours Figure 4 Coverage Contour Comparison Table 1 TVStudy Analysis of Proposal Form 2100 Saved Version of Engineering Sections from FCC Form at Time of Upload

Chesapeake RF Consultants, LLC Joseph M. Davis, P.E. November 13, 2019 207 Old Dominion Road Yorktown, VA 23692 703-650-9600

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Antenna Azimuthal Pattern

WFXU(DT) Live Oak, FL

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Antenna Elevation Pattern

WFXU(DT) Live Oak, FL

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November, 2019 Proposed WFXU Clinch 48 dBµ Camden (Principal Community) GradyCairo 41 dBµ Thomas(Noise Limited Service Contour)Brooks Charlton Thomasville LowndesValdosta Kingsland Quitman Echols Saint Marys Nassau Fernandina Beach Yulee

Monticello Hamilton Leon Jefferson Madison Tallahassee Madison Baker Duval Atlantic Beach Live Oak, FL Jacksonville Beach Live Oak Macclenny Suwannee Columbia Lake City Orange Park

Taylor Perry Fruit Cove Union Middleburg

Clay Green Cove Springs Lafayette Bradford Starke

Area Population Proposed Digital Coverage (sq. km) (2010 Census) Within Noise Limited Service Contour 8,152.7 206,295 Dixie OET Bulletin 69: TVStudy High Springs Scale 1:1,000,000 Within noise limited contour 8,759.6 218,273 Not affected by terrain losses 8,759.6 218,273 km Lost to all interference 4.0 71 Gilchrist Alachua 0 V-Soft10 Communications20 30LLC ® © Net Interference-Free Service 8,755.6 218,202 Alachua Putnam Gainesville Palatka Sylvester Alma ouglas Putney Tift Tifton

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Clinch November, 2019 Camden Grady Cairo ThomasProposed WFXU 13.4 kW 124 m Brooks Charlton Thomasville41 dBµ Contour (NLSC) LowndesValdosta ingsland uitman Echols Saint arys Authorized WFXU 11.6 kW 133 m Nassau Fernandina Beach CP File# 0000026640 ulee Identical To Reassignment Baseline 41 dBµ Contour (NLSC) onticello Hamilton Leon Jefferson adison Tallahassee Madison Baker Duval Atlantic Beach acksonville Beach Live Oak acclenny Suwannee Columbia Lake City Orange Park

Taylor Perry Fruit Cove Union iddleburg

Clay reen Cove Springs Lafayette Bradford Starke

Dixie igh Springs Scale 1:1,000,000 km Gilchrist Alachua 0 V-Soft10 Communications20 30LLC ® © Alachua Putnam Gainesville Palatka Table 1 WFXU TVStudy Analysis of Proposal (page 1 of 2) tvstudy v2.2.5 (4uoc83) Database: localhost, Study: WFXU prop_CP-Mod, Model: Longley-Rice Start: 2019.11.13 14:55:19

Study created: 2019.11.13 14:55:18

Study build station data: LMS TV 2019-11-05

Proposal: WFXU D17 DT APP LIVE OAK, FL File number: WFXU prop_CP-Mod Facility ID: 22245 Station data: User record Record ID: 2925 Country: U.S. Zone: III

Search options: Baseline record excluded if station has CP

Stations potentially affected by proposal:

IX Call Chan Svc Status City, State File Number Distance No WCJB-TV D16 DT LIC GAINESVILLE, FL BLCDT20071119AJB 127.2 km No WJHG-TV D16 DT LIC PANAMA CITY, FL BLANK0000068516 228.9 No WSAV-TV D16 DT LIC SAVANNAH, GA BLANK0000055021 233.7 No WLGA D17 DD CP OPELIKA, AL BLANK0000030376 274.6 No WEAR-TV D17 DT LIC PENSACOLA, FL BLCDT20050627AAK 443.2 No WFTS-TV D17 DT CP TAMPA, FL BLANK0000034831 309.7 No WTAT-TV D17 DT CP CHARLESTON, SC BLANK0000084829 410.9 No WJXT D18 DT CP JACKSONVILLE, FL BLANK0000034420 143.3

No non-directional AM stations found within 0.8 km

No directional AM stations found within 3.2 km

Record parameters as studied:

Channel: D17 Latitude: 30 33 0.80 N (NAD83) Longitude: 83 0 47.00 W Height AMSL: 161.0 m HAAT: 123.5 m Peak ERP: 13.4 kW Antenna: DIE TLP-J 50.0 deg Elev Pattrn: Generic Elec Tilt: 1.00

39.0 dBu contour: Azimuth ERP HAAT Distance 0.0 deg 10.6 kW 118.2 m 56.0 km 45.0 4.51 119.9 52.2 90.0 7.82 118.8 54.7 135.0 12.0 121.9 56.8 180.0 2.64 130.5 50.4 225.0 1.95 136.7 49.4 270.0 1.17 116.1 45.4 315.0 10.4 126.3 56.5

Distance to Canadian border: 1237.1 km

Distance to Mexican border: 1452.4 km

Conditions at FCC monitoring station: Vero Beach FL Bearing: 144.2 degrees Distance: 400.5 km

Proposal is not within the West Virginia quiet zone area

Conditions at Table Mountain receiving zone: Bearing: 304.0 degrees Distance: 2268.6 km

No land mobile station failures found

Table 1 WFXU TVStudy Analysis of Proposal (page 2 of 2)

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%

------Interference to proposal scenario 1

Call Chan Svc Status City, State File Number Distance Desired: WFXU D17 DT APP LIVE OAK, FL WFXU prop_CP-Mod

Undesireds: WLGA D17 DD CP OPELIKA, AL BLANK0000030376 274.6 km

Service area Terrain-limited IX-free Percent IX 8759.6 218,273 8759.6 218,273 8755.6 218,202 0.05 0.03

Undesired Total IX Unique IX Prcnt Unique IX WLGA D17 DD CP 4.0 71 4.0 71 0.05 0.03