Attachment freq. coord. report

This document pretains to SES-STA-20030305-00268 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2003030500268_309356

19700 Janelia Farm Boulevard Ashburn, VA 20147 — 703.726.5500 COMSEARCTCH® Fax 703.726.5600 March 17, 2003 Mr. Phillip Harlow ESATEL COMMUNICATIONS 4900 Seminary Road #1120 Alexandria, Virginia 22311 RE:; ESATEL COMMUNICATIONS, INC. C—Band Transmit/Receive Earth Station Silver Spring, Maryland Comsearch Job ID #: 030313JECA *xk%*****T/®PEDITED FREQUENCY COORDINATION********** Dear Mr. Harlow: Enclosed please find a copy of the prior coordination notice (PCN) for the above listed earth station. This notice was forwarded to all common carriers within the coordination distance contours of the earth station. Please review the parameters of the proposed earth station and contact Comsearch immediately if you find any discrepancies with this information. The final Frequency Coordination Report will be forwarded within two weeks after completion of the prior coordination process when all interference cases have been resolved. In addition, if this station is not filed with the FCC within six months from the coordination date, you must notify us so that we can forward a six month renewal notice to the microwave community. Thank you for the opportunity to be of service to you. If you need additional information, please call me at (703) 726—5660. Sincerely, Jeffrey E. Cowles Senior Frequency Coordinator Microwave and Satellite Services JEC:rh Enclosure www.comsearch.com

19700 Janelia Farm Boulevard Ashburn, VA 20147 f (703) 726—5500 Fax (703) 726—5600 COMSEARCH® http://www.comsearch.com March 13, 2003 *k kok kok e e e k hk e e k k h k K k *** CLIENT COPY *** *** PLEASE MAIL *** *** TO CUSTOMER *** RE: ESATEL Communications, Inc. C—Band Transmit/Receive Earth Station Silver Spring, Maryland Comsearch Job ID #: 030313JECA ********x** EXPEDILTED FREQUENCY COORDINATION ********** Dear Frequency Coordinator: : This notice is being provided in accordance with Section. . 25.203 "(c) of the FCC Rules and Requlations. We are forwarding the attached expedited coordination data on behalf of our client ESATEL Communications, Inc,. . 4900 Seminary Road, Suite [1120, Alexandria, Virginia 22311, for a proposed 4.6 meter C—band earth station to be added to their Silver Spring, Maryland facility.. This coordination notice is being circulated to the owners (or their coordination agents) of all existing or proposed terrestrial facilities operating in the shared frequency band within the coordination area/contours of the proposed earth station (s) . We respectfully request that you examine this data for its‘ interference potential with your systems(s). Please note that the RF transmit power density for this earth station is lower than other licensed C—band earth stations at this facility. In the event that your analysis identifies potential interference cases that have not been resolved, please contact COMSEARCH by March 21, 2003. To help expedite the coordination, our client will accept any potential 4 GHz cases that may be identified. If there are any questions concerning this coordination, please call me at (703) 726—5660. Sincerely, Cowles or Frequency Coordinator Microwave and Satellite Services

SATELLITE EARTH STATION FREQUENCY COORDINATION DATA 03/1i3/2003 Company ESATEL COMMUNICATIONS, INC. Earth Station Name, State SILVER SPRING, MD Latitude {(DMS) (NADS83) 39 0 5.4 N Longitude (DMS) (NADS83) 77 3 26.9 W Ground Elevation AMSL (Ft/m) 241.0 / 73 .46 Antenna Centerline AGL (Ft/m) 9.0 / 2 .74 Receive Antenna Type: ANDREW CORPORATION ESA4 .6 4 .0 GHz Gain (dBi) / Diameter (m) 44 .4 / 4 .6 3 GB / 15 dB Half Beamwidth 0.46 / 0 .91 Transmit Antenna Type: ANDREW CORPORATION ESA4 .6 6.0 GHz Gain (dBi) / Diameter {(m) 48 .2 / 4 .6 3 GB / 15 dB Half Beamwidth 0.31 / 0 .60 Operating Mode TRANSMIT AND RECEIVE Modulation DIGITAL Emission / Receive Band (MHz) 43K9GTW — SM76G7W / 3700.0000 — 4200.0000 Emission / Transmit Band (MHz) 43K9GT7W — S5M76G7W / 5925.0000 — 6425.0000 Max. Available RF Power (dBW) /4 kHz) —18 .30 (aBw) /MHz) 5.70 Max. EIRP (dBw) /4 kHz) 29 .90 (a@BwW) /MHz) 53 .90 Max permissible Interference Power 4 .0 GHz, 20% (GBW/1 MHz) —157 .0 4 .0 GHz, 0.0100% (dBW/1 MHz) —147 .0 6.0 GHz, 20% (dBW/4 kHz) —154 .0 6.0 GHz, 0.0025% (dBW/4 kHz) —131 .0 Range of Satellite Arc (Geostationary) Degrees Longitude 5.0 W / 149.0 W Azimuth Range (Min/Max) 101.5 / 258 .4 Corresponding Elevation Angles 5.2 / 5 .3 Radio Climate A Rain Zone 2 Max Great Circle Coordination Distance (Mi/Km) 4 .0 GHz 371.2 / 597 .5 6 .0 GHz 137.7 / 221 .6 Precipitation Scatter Contour Radius (Mi/Km) 4 .0 GHz 383 .4 / 617 .0 6.0 GHz 62.1 / 100 .0

Table of Earth Station Coordination Values 03/13/2003 Earth Station Name SILVER SPRING MD Owner ESATEL COMMUNICATIONS, INC. Latitude (DMS) (NAD83) 39 0 5.4 N Longitude (DMS) (NAD83) 77 3 26.9 W Ground Elevation (Ft/m) 241.0 / 73.46 AMSL Antenna Centerline (Ft/m) 9.0 / 2.74 AGL Antenna Model ANDREW CORPORATION ESA4 .6 Objectives: Receive —157.0 (d@BwW /1 MHz) Transmit —154.0 (dBW /4 kHz) TX Power —18.3 (G@BwW/4 kHz) Azimuth Horizon Antenna 4 .0 GHz 6.0 GHz (Deg) Elevation Disc. Antenna Coordination Antenna Coordination Angle Angle Gain Distance Gain Distance (Deg) (Deg) (aBi) (Km) (dBi) (Km) 0 0 .00 101 .47 —10 .00 291 .7 —10 .00 121 .4 5 1 .56 96 .51 —10 .00 208 .6 —10 .00 100 .0 10 1 .62 91 .52 —10 .00 206 .8 —10 .00 100 .0 15 1 .93 86 .53 —10 .00 201 .1 —10 .00 100 .0 20 1 .52 81 .54 —10 .00 209 .7 —10 .00 100 .0 25 1 .58 76 .55 —10 .00 207 .9 —10 .00 100 .0 30 1 .99 71.55 =10 .00 199 .4 —10 .00 100 .0 35 2 .41 66 .55 —10 .00 189 .8 —=10 .00 100 .0 40 2 .73 61.55 —10 .00 182 .8 —10 .00 100 .0 45 2 .76 56 .55 —10 .00 181 .9 —10 .00 100 .0 50 2 .66 51.57 —10 .00 184.3 —=10 .00 100 .0 55 2 .70 46 .57 —9 .70 184 .8 —9 .70 100 .0 60 2 . 73 41 .58 —8 .47 190 .2 —8 .47 100 .0 65 3 . 04 36 .58 —7 .08 190 .3 —7 .08 100 .0 70 3 . 09 31 .58 —5 .49 197 .1 —5 .49 100 .0 75 3 . 09 26 .60 —3 . 62 206 .4 —3 . 62 100 .0 80 2 .91 21. 64 —1 .38 219 .8 —1 .38 100 .0 85 2 .34 16 .76 1 .39 252.3 1 .39 100 .0 90 2 .17 11 .90 5.11 285 .2 5.11 100 .0 95 2 .15 7 .19 10 .58 332 .9 10 .58 104 .6 100 2 .06 3 .48 18 .46 597 .4 18 .46 221 .5 105 1 .88 4 .80 14 .97 443 .7 14 .97 148 .5 110 1 .83 8 .59 8 .65 327 .9 8 .65 105 .8 115 2 . 02 12 .17 4 .87 287 .8 4 .87 100 .0 120 2 . 08 15 .75 2 .07 264 .5 2 .07 100 .0 125 2 .22 19.19 — 0 . 08 245 .2 —0 .08 100 .0 130 2 .55 22 .37 —1 .74 226 .2 —1 .74 100 .0 135 2 .91 25 .38 —3 .11 210 .3 —3 .11 100 .0 140 3 .11 28 .32 —4 .30 202 .7 —4 .30 100 .0 145 3 .25 31 .07 —5 .31 194 .6 —5 .31 100 .0 150 3 .30 33 .64 —6 .17 189 .2 —6 .17 100 .0 155 3 .25 36 .00 —6 .91 186 .7 —6 .91 100 .0 160 3 . 08 38 .10 —7 .52 187 .1 —7 .52 100 .0 165 2 .87 39 .88 —8 .02 189 .4 —8 .02 100 .0 170 2 .68 41 .22 —8 .38 191 .8 —8 .38 100 .0 175 2 .40 42 .21 —8 .63 196 .7 —8 .63 100 .0 180 2. 01 42 .83 —8 .79 204 .5 —8 .79 100 .0

Table of Earth Station Coordination Values 03/13/2003 Earth Station Name SILVER SPRING MD Owner ESATEL COMMUNICATIONS, INC. Latitude (DMS) (NADS83) 39 0 5.4 N Longitude (DMS) (NAD83) 77 3 26.9 W Ground Elevation (Ft/m) 241.0 / 73 .46 AMSL Antenna Centerline (Ft/m) 9 .0 / 2.74 AGL Antenna Model ANDREW CORPORATION ESA4 .6 Objectives: Receive —157.0 (@BW /1 MHz) Transmit —154.0 (dBW /4 kHz) TX Power —18 .3 (GBW/4 kHz) Azimuth Horizon Antenna 4 .0 GHz 6.0 GHz (Deg) Elevation Disc. Antenna Coordination Antenna Coordination Angle Angle Gain Distance Gain Distance (Deg) (Deg) (dBi) (Km) (aBi) (Km) 185 1 .53 43 .07 —8 .86 215 .0 —8 .86 100 .0 190 0 .97 42 .87 —8 .80 233 .3 —8 .80 100 .0 195 0 .66 41 .94 —8 .57 254 .2 —8 .57 100 .0 200 0 .54 40 .37 —8 .15 264 .2 —8 .15 100 .4 205 0 .61 38 .24 —7 .56 263 .3 —7 .56 100 .0 210 0 .64 35 .81 —6 .85 265 .9 —6 .85 100 .0 215 0 .66 33 .11 —6 .00 270 .4 —6 .00 100 .8 220 0 .56 30 .24 —5 .01 283 .3 —5 .01 107 .5 225 0 .48 27 .16 —3 .85 298 .8 —3 . 85 115 .4 230 0 .47 23 .85 —2 .44 309 .7 —2 .44 119 .6 235 0 .40 20 .46 —0 .77 331.9 —=— 0 .77 129 .7 240 0 .48 16 .84 1 .34 338 .1 1 .34 129.3 245 0 .48 13 .19 3 . 99 359 .5 3 .99 135 .6 250 0 .60 9 .40 7 .67 381 .8 7 .67 141 .2 255 0 .53 5 .83 12 .85 470 .7 12 .85 170 .2 260 0 .61 4 .94 14 .66 594 .6 14 .66 220 .8 265 0 .67 8 .04 9 .37 390 .3 9 .37 143 .0 270 0 .53 12 .52 4 .56 360 .0 4 .56 134 .6 275 0 .47 17 .26 1 .07 338 .1 1 .07 129 .8 280 0 .49 22 .10 —1 .61 314 .6 —1 .61 120 .6 285 0 . 52 26 .99 —3 .78 295 .3 —3 .78 113 .0 290 0 .33 31 .94 —5 .61 304 .5 —5 .61 122 .3 295 0 .33 36 .88 —7 .17 294 .4 —7 .17 118 .6 300 0 .55 41 .82 —8 .53 261 .4 —8 .53 100 .0 305 0 .43 46 .79 —9 .75 264 .6 —9 .75 103 .3 310 0 .47 51 .76 —10 .00 258 .8 —10 .00 100 .0 315 0 . 38 56 .74 —10 .00 269 .0 —10 .00 106 .6 320 0 .39 61 .71 —10 .00 267 .7 —10 .00 105 .8 325 0 .41 66 .69 —10 .00 266.3 —10 .00 104 .8 330 0 .49 71 .66 —10 .00 256 .8 —10 .00 100 .0 335 0 .56 76 .64 —10 .00 251 .7 —10 .00 100 .0 340 0 .71 81 .62 —10 .00 242 .1 —10 .00 100 .0 345 0 .98 86 .61 —10 .00 226 .3 —10 .00 100 .0 350 1 .37 91 .59 —10 .00 213 .9 —10 . 00 100 .0 355 0 .99 96 .58 —10 .00 226 .0 —10 .00 100 .0


Document Created: 2003-03-21 10:03:04
Document Modified: 2003-03-21 10:03:04
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