FREQUENCY COORDINATION AND INTERFERENCE
ANALYSIS REPORT

Prepared for
The Villages Media Group
LADY LAKE, FL
Satellite Earth Station

Prepared By:
COMSEARCH
19700 Janelia Farm Boulevard
Ashburn, VA 20147
June 12, 2018

TABLE OF CONTENTS

1. CONCLUSIONS
2. SUMMARY OF RESULTS
3. SUPPLEMENTAL SHOWING
4. EARTH STATION COORDINATION DATA
5. CERTIFICATION

	

1. CONCLUSIONS

An interference study considering all existing, proposed and prior coordinated microwave facilities within the coordination contours of the proposed earth station demonstrates that this site will operate satisfactorily with the common carrier microwave environment. Further, there will be no restrictions of its operation due to interference considerations.

2. SUMMARY OF RESULTS

No great circle interference cases were identified during the interference study of the proposed earth station. 

3. SUPPLEMENTAL SHOWING

Pursuant to Part 25.203(c) of the FCC Rules and Regulations, the satellite earth station proposed in this application was coordinated by Comsearch using computer techniques and in accordance with Part 25 of the FCC Rules and Regulations.

Coordination data for this earth station was sent to the below listed carriers with a letter dated 06/12/2018.

Company
 
Comsearch

4. EARTH STATION COORDINATION DATA

This section presents the data pertinent to frequency coordination of the proposed earth station that was circulated to all carriers within its coordination contours.

Date:	06/12/2018	
Job Number:	180612COMSSL22 
Administrative Information	
Status	ENGINEER PROPOSAL 
Call Sign	 
Licensee Code	VILMED
Licensee Name	The Villages Media Group 
Site Information	LADY LAKE, FL		
Venue Name			 
Latitude (NAD 83)	28° 54' 16.9"  N	 	 
Longitude (NAD 83)	81° 57' 35.3"  W	 	 
Climate Zone	A	 	 
Rain Zone	1	 	 
Ground Elevation (AMSL)	23.91 m / 78.5 ft	 	 
Link Information
Satellite Type	Geostationary
Mode	RO - Receive-Only
Modulation	Digital
Satellite Arc	60° W to 143° West Longitude  
Azimuth Range	140.2° to 255.0° 
Corresponding Elevation Angles	48.5° / 16.8°
Antenna Centerline (AGL)	2.74 m / 9.0 ft
Antenna Information	Receive – DH 3.7 meter
Manufacturer	DH Satellite
Model	37DH1
Gain / Diameter	41.7 dBi / 3.7 m
3-dB / 15-dB Beamwidth	1.40° / 2.40° 
 
Interference Objectives:	Long Term	-156.0 dBW/MHz 	20%
	Short Term	-146.0 dBW/MHz 	0.01%
Frequency Information	Receive 4.0 GHz 
Emission / Frequency Range (MHz)	36M0G7W / 3700.0 - 4200.0 

Max Great Circle Coordination Distance	367.4 km / 228.3 mi
Precipitation Scatter Contour Radius	591.3 km / 367.4 mi

Coordination Values	LADY LAKE, FL	 
Licensee Name	The Villages Media Group
Latitude (NAD 83)	28° 54' 16.9"  N
Longitude (NAD 83)	81° 57' 35.3"  W
Ground Elevation (AMSL)	23.91 m / 78.5 ft
Antenna Centerline (AGL)	2.74 m / 9.0 ft
Antenna Model	DH 3.7 meter
Antenna Mode	Receive 4.0 GHz
Interference Objectives: Long Term	-156.0 dBW/MHz 	20%
	Short Term	-146.0 dBW/MHz 	0.01%

			Receive 4.0 GHz
	Horizon 	Antenna	Horizon	Coordination
Azimuth (°)	Elevation (°)	Discrimination (°)	Gain (dBi)	Distance (km)
  0	  0.00	104.33	 -10.00	 285.28 
  5	  0.00	109.10	 -10.00	 285.28 
 10	  0.00	113.85	 -10.00	 285.28 
 15	  0.00	112.42	 -10.00	 285.28 
 20	  0.00	109.44	 -10.00	 285.28 
 25	  0.00	106.36	 -10.00	 285.28 
 30	  0.00	103.20	 -10.00	 285.28 
 35	  0.00	 99.98	 -10.00	 285.28 
 40	  0.00	 96.71	 -10.00	 285.28 
 45	  0.00	 93.42	 -10.00	 285.28 
 50	  0.00	 90.11	 -10.00	 285.28 
 55	  0.21	 86.79	 -10.00	 283.58 
 60	  0.24	 83.48	 -10.00	 280.46 
 65	  0.25	 80.19	 -10.00	 279.47 
 70	  0.36	 76.93	 -10.00	 266.19 
 75	  0.36	 73.74	 -10.00	 265.94 
 80	  0.27	 70.66	 -10.00	 276.11 
 85	  0.37	 67.61	 -10.00	 264.41 
 90	  0.00	 64.90	 -10.00	 285.28 
 95	  0.00	 62.17	 -10.00	 285.28 
100	  0.26	 59.43	 -10.00	 278.22 
105	  0.32	 57.00	 -10.00	 270.62 
110	  0.29	 54.85	 -10.00	 274.59 
115	  0.28	 52.95	 -10.00	 275.33 
120	  0.29	 51.31	 -10.00	 273.48 
125	  0.30	 50.00	 -10.00	 273.38 
130	  0.30	 49.04	 -10.00	 272.90 
135	  0.38	 48.36	 -10.00	 263.26 
140	  0.41	 48.13	 -10.00	 260.02 
145	  0.31	 48.41	 -10.00	 271.38 
150	  0.29	 48.99	 -10.00	 273.87 
155	  0.21	 50.01	 -10.00	 284.52 
160	  0.37	 51.14	 -10.00	 264.64 
165	  0.45	 52.68	 -10.00	 255.22 
170	  0.31	 54.51	 -10.00	 272.07 
175	  0.30	 55.60	 -10.00	 272.23 
180	  0.61	 55.67	 -10.00	 242.87 
185	  0.69	 55.24	 -10.00	 238.08 

Coordination Values	LADY LAKE, FL	 
Licensee Name	The Villages Media Group
Latitude (NAD 83)	28° 54' 16.9"  N
Longitude (NAD 83)	81° 57' 35.3"  W
Ground Elevation (AMSL)	23.91 m / 78.5 ft
Antenna Centerline (AGL)	2.74 m / 9.0 ft
Antenna Model	DH 3.7 meter
Antenna Mode	Receive 4.0 GHz
Interference Objectives: Long Term	-156.0 dBW/MHz 	20%
	Short Term	-146.0 dBW/MHz 	0.01%

			Receive 4.0 GHz
	Horizon 	Antenna	Horizon	Coordination
Azimuth (°)	Elevation (°)	Discrimination (°)	Gain (dBi)	Distance (km)
190	  0.67	 54.19	 -10.00	 239.26 
195	  0.76	 52.39	 -10.00	 233.84 
200	  0.67	 50.17	 -10.00	 239.14 
205	  0.47	 47.55	  -9.93	 253.61 
210	  0.00	 44.70	  -9.26	 290.04 
215	  0.00	 41.27	  -8.39	 295.73 
220	  0.00	 37.60	  -7.38	 302.49 
225	  0.00	 33.77	  -6.21	 310.51 
230	  0.00	 29.81	  -4.86	 320.68 
235	  0.00	 25.88	  -3.33	 331.74 
240	  0.00	 22.36	  -1.74	 343.48 
245	  0.00	 19.45	  -0.22	 354.91 
250	  0.00	 17.47	   0.94	 363.88 
255	  0.00	 16.75	   1.40	 367.42 
260	  0.00	 17.46	   0.95	 363.94 
265	  0.00	 19.43	  -0.21	 355.00 
270	  0.00	 22.33	  -1.72	 343.58 
275	  0.00	 25.85	  -3.31	 331.84 
280	  0.00	 29.77	  -4.85	 320.78 
285	  0.00	 33.96	  -6.27	 310.09 
290	  0.00	 38.32	  -7.58	 301.11 
295	  0.00	 42.80	  -8.79	 293.12 
300	  0.00	 47.36	  -9.89	 286.01 
305	  0.00	 51.99	 -10.00	 285.28 
310	  0.00	 56.66	 -10.00	 285.28 
315	  0.00	 61.37	 -10.00	 285.28 
320	  0.00	 66.11	 -10.00	 285.28 
325	  0.00	 70.86	 -10.00	 285.28 
330	  0.00	 75.63	 -10.00	 285.28 
335	  0.00	 80.41	 -10.00	 285.28 
340	  0.00	 85.19	 -10.00	 285.28 
345	  0.00	 89.98	 -10.00	 285.28 
350	  0.00	 94.77	 -10.00	 285.28 
355	  0.00	 99.55	 -10.00	 285.28 

 

5. CERTIFICATION

I HEREBY CERTIFY THAT I AM THE TECHNICALLY QUALIFIED PERSON RESPONSIBLE FOR THE PREPARATION OF THE FREQUENCY COORDINATION DATA CONTAINED IN THIS APPLICATION, THAT I AM FAMILIAR WITH PARTS 101 AND 25 OF THE FCC RULES AND REGULATIONS, THAT I HAVE EITHER PREPARED OR REVIEWED THE FREQUENCY COORDINATION DATA SUBMITTED WITH THIS APPLICATION, AND THAT IT IS COMPLETE AND CORRECT TO THE BEST OF MY KNOWLEDGE AND BELIEF.

BY: ___________________________

Scott Luddy
Engineer I
COMSEARCH
19700 Janelia Farm Boulevard
Ashburn, VA 20147

DATED: June 12, 2018