Attachment Exhibit B

This document pretains to SES-MFS-20100715-00903 for Modification w/ Foreign Satellite (earth station) on a Satellite Earth Station filing.

IBFS_SESMFS2010071500903_829390

Exhibit B Link Budgets and Coverage Plot

16-Jun-10 256ksps R1/2 HN INROUTE LINK BUDGET 12:18 PM Satellite: Telstar 11 AO up US dn 0.51m Remote in Helsinki 7.6m hub in Germantown BASELINE PARAMETERS Value Unit SUMMARY % Avail S/C Power Reqd/Crr 0.68 % Carrier Info Rate 256 Kbps % Xponder Bandwidth Reqd/Crr 2.67 % FEC Code Rate 0.500 Clear Sky Link Margin 0.4 dB Crr Xmission Rate 256 Kbps Contract EIRP at reference contour 25.8 dBw CARRIER Min Reqd Ebt/No -0.9 dB LINK PERFORMANCE Cl Sky Up Fade Dn Fade Unit DATA No of bits/symbol 2.0 Bits Demod BT Product 1.00 Satellite SFD -96.1 -96.1 -96.1 dBW/m2 Spreading factor 4.00 Agg Input B.O. 6.0 6.0 6.0 dB Spread Bandwidth 1024 kHz Input Backoff/Crr 27.7 28.7 27.7 dB Crr Spacing Fctr 1.41 x Rs Crr Flux Density -123.8 -124.8 -123.8 dBW/m2 Carrier Spacing 1440 kHz Gain of a Sq meter 44.4 44.4 44.4 dBi Satellite Telstar 11 AO up US UPLINK Uplink Path Losses 208.0 209.0 208.0 dB Location -37.0 WL BUDGET Carrier Up EIRP 39.8 39.8 39.8 dBW Hub EIRP Contour 47.0 dBW Satellite G/T -1.9 -1.9 -1.9 dB/K Remote G/T Contour -1.9 dB/K Attn Setting 0.0 dB SATELLITE Xponder Gain 190.0 dB C/N Uplink -1.6 -2.6 -1.6 dB DATA SFD -96.1 dBW/m2 Xponder Bandwidth 54.0 MHz Saturation EIRP 47.0 47.0 47.0 dBW Agg Input BO 6.0 dB Agg Output B.O. 3.5 3.5 3.5 dB Agg Output BO 3.5 dB Output Backoff/Crr 25.2 26.2 25.2 dB Uplink Frequency 14.0900 GHz Carrier Dn EIRP 21.8 20.8 21.8 dBW Dnlink Frequency 11.7900 GHz DOWNLINK Dnlink Path Losses 205.8 205.8 211.0 dB Tx Antenna Dia 0.51 meters BUDGET Rx Pointing Losses 0.4 0.4 0.4 dB HPA Max Output Pwr 25.0 Watts Cl Sky E/S G/T 35.6 35.6 35.6 dB/K Degradation in G/T 0.0 0.0 3.9 dB Tx Antenna Gain 33.4 dBi Tx Pointing Losses 0.3 dB C/N Downlink 19.7 18.7 10.7 dB C/N Uplink -1.6 -2.6 -1.6 dB GROUND Rx Antenna Dia 7.6 meters C/N Downlink 19.7 18.7 10.7 dB SEGMENT Rx Antenna Effcy 62 % C/I Intermod (S/C) 13.3 12.3 13.3 dB DATA Rx Antenna Gain 57.4 dBi C/I Uplink Adj Sat 7.3 6.3 7.3 dB Rx Pointing Losses 0.4 dB COMPOSITE C/I Downlink Adj Sat 25.5 24.5 25.5 dB Pre LNA Losses 0.1 dB LINK C/I Xpol 17.7 16.7 13.3 dB LNA Noise Temp 90 K C/I Adjacent Carrier 17.0 16.0 17.0 dB Ant,etc Temp 50 K Cl Sky Noise Temp 140 K C/(Nu,d) -1.7 -2.7 -1.9 dB C/(Nu,d,ims/c) -1.8 -2.8 -2.0 dB Rx Clr Sky G/T 35.6 dB/K C/(Nu,d,im,i)Total -2.4 -3.4 -2.7 dB Uplink Rain Attn 1.0 dB LINK MARGIN 0.4 -0.6 0.2 dB RAIN Dnlink Rain Attn 5.2 dB MARGINS Target Link Availability 96.0 % Minimum Ebi/No 2.1 dB Tx E/S Location Helsinki MODEM Minimum Reqd Ebt/No -0.9 dB Tx E/S Latitude 60.2 N 10*log(Rbt/Noise BW) -3.0 dB SITE Tx E/S Longitude 24.9 W Minimum Reqd C/N -2.8 dB GEOGRAPHIC Tx E/S Elev Angle 4.9 deg DATA Rx E/S Location Germantown RF Head Max Output Power 25.0 Watts Rx E/S Latitude 39.2 N Misc Feed Losses etc 0.0

Rx E/S Longitude -77.2 W EARTH E/S EIRP Reqd twds S/C 40.4 dBW Rx E/S Elev Angle 28.7 deg STATION (Note: reqd to achieve link margin) HPA Tx Pointing Losses 0.3 dB XPOL S/C Isolation 36.0 dB Max EIRP Avail towards S/C 39.8 dBW ISOLATION Tx E/S Isolation 35.0 dB DATA Rx E/S Isolation 25.0 dB RF Head Output BO (Cl Sky) 7.3 dB Uplnk Free Sp Loss 207.7 dB MISC Dnlnk Free Sp Loss 205.6 dB Uplink Pwr Dens into Antenna -17.4 dBW/4kHz LOSSES Uplink Atmos Attn 0.3 dB PSD Limit for compliant antenna -14.0 dBW/4kHz Dnlink Atmos Attn 0.2 dB PSD Limit adjusted for sidelobes -17.4 dBW/4kHz

6/16/2010 HughesNet LINK BUDGET 11:18 AM Satellite: Telstar 11 US up AO dn 0.51 m Remote Located in Helsinki Crr EIRP Density = 6.0 dBW/4 KHz BASELINE PARAMETERS Value Unit SUMMARY % Avail S/C Power Reqd/Crr 35.4 % Max. No of Crrs/Xponder 2 % Xponder Bandwidth Reqd/Crr 22.3 % Carrier Info Rate 5000 Kbps Clear Sky Link Margin 1.7 dB Net FEC Code Rate 0.500 Transmit Symbol Rate 5000 Ksps Contract EIRP at reference contour 37.4 dBw CARRIER Min Reqd Ebt/No -1.8 dB LINK PERFORMANCE Cl Sky Up Fade Dn Fade Unit DATA No of bits/symbol 2.0 Bits Satellite SFD -90.5 -90.5 -90.5 dBW/m2 Demod BT Product 1.00 Agg Input B.O. 6.0 6.0 6.0 dB Crr Noise Bandwidth 5000 KHz Input Backoff/Crr 11.1 11.1 11.1 dB Carrier Spacing 6000 KHz Crr Flux Density -101.6 -101.6 -101.6 dBW/m2 Satellite Telstar 11 US up AO dn UPLINK Gain of a Sq meter 44.3 44.3 44.3 dBi Location -37.0 WL BUDGET Uplink Path Losses 207.4 214.8 207.4 dB EIRP Contour at Remote 44.7 dBW Carrier Up EIRP 61.5 68.9 61.5 dBW G/T Contour at Hub 3.5 dB/K Satellite G/T 3.5 3.5 3.5 dB/K Attn Setting 11.0 dB SATELLITE Xponder Gain 182.0 dB C/N Uplink 19.2 19.2 19.2 dB DATA SFD -90.5 dBW/m2 EIRP Contour 44.7 44.7 44.7 dBW Xponder Bandwidth 27.0 MHz Agg Output B.O. 3.5 3.5 3.5 dB Agg Input BO 6.0 dB Output Backoff/Crr 8.0 8.0 8.0 dB Agg Output BO 3.5 dB Carrier Dn EIRP 36.1 36.1 36.7 dBW Uplink Frequency 13.918 GHz DOWNLINK Dnlink Path Losses 206.2 206.2 206.3 dB Dnlink Frequency 11.618 GHz BUDGET Rx Pointing Losses 0.2 0.2 0.2 dB Tx Antenna Dia 7.6 meters Cl Sky E/S G/T 12.2 12.2 12.2 dB/K HPA Max Output Pwr 400.0 Watts Degradation in G/T 0.0 0.0 0.1 dB Tx Antenna Gain 58.8 dBi C/N Downlink 3.6 3.6 4.0 dB Tx Pointing Losses 0.5 dB C/N Uplink 19.2 19.2 19.2 dB GROUND C/N Downlink 3.6 3.6 4.0 dB SEGMENT Rx Antenna Dia 0.51 meters C/I Intermod (S/C) 22.4 22.4 22.4 dB DATA C/I Uplink Adj Sat 31.0 31.0 31.0 dB Rx Antenna Gain 31.8 dBi COMPOSITE C/I Dnlink Adj Sat 15.0 15.0 15.0 dB Rx Pointing Losses 0.2 dB LINK C/I Xpol 18.4 15.4 18.4 dB Pre LNA Losses 0.3 dB C/I Intermod (E/S) 32.8 18.0 32.8 dB LNA Noise Temp 38 K Ant,etc Temp 28 K C/(Nu,d) 3.4 3.4 3.8 dB Cl Sky Noise Temp 66 K C/(Nu,d,ims/c) 3.4 3.4 3.8 dB Rx Clr Sky G/T 12.2 dB/K C/(Nu,d,im,i)Total 3.0 2.7 3.3 dB Uplink Rain Attn 7.4 dB LINK MARGIN 1.7 1.5 2.1 dB RAIN Dnlink Rain Attn 0.0 dB Minimum Reqd Ebi/No 1.2 dB MARGINS Up Fade Pwr Cntrl 7.4 dB MODEM Minimum Reqd Ebt/No -1.8 dB Link Availability 96.0 % 10*log(Rbt/Noise BW) 3.0 dB Tx E/S Location Germantown Minimum Reqd C/N 1.2 dB Tx E/S Latitude 39.2 N E/S EIRP/Crr Reqd (Cl Sky) 61.5 dBW SITE Tx E/S Longitude -77.2 W Tx Gain - Pointing Loss 58.3 dB GEOGRAPHIC Tx E/S Elev Angle 29 deg EARTH Waveguide Losses 6.0 dB DATA STATION Tx Power Reqd/Cxr (clear sky) 9.2 dBW Rx E/S Location Helsinki HPA 8.4 watts

Rx E/S Latitude 60.2 N Uplink Power Control 7.4 dB Rx E/S Longitude 24.9 W TX Power Reqd/Cxr (full UPC) 16.6 dBW Rx E/S Elev Angle 4.9 deg 46.1 watts XPOL S/C Isolation 36.0 dB ISOLATION Tx E/S Isolation 35.0 dB DATA Rx E/S Isolation 20.0 dB Uplnk Free Sp Loss 207.1 dB Dnlink EIRP Dens @ Beam Peak (45.4 dBW) 6.0 dBW/4KHz MISC Dnlnk Free Sp Loss 206.0 dB PSD Limit for VSAT Blanket Licence 6.0 dBW/4KHz LOSSES Uplink Atmos Attn 0.3 dB Dnlink Atmos Attn 0.2 dB

16-Jun-10 256ksps R1/2 HN INROUTE LINK BUDGET 12:17 PM Satellite: Telstar 11 AO up US dn 0.51m Remote in Montreal Island, NU7.6m hub in Germantown BASELINE PARAMETERS Value Unit SUMMARY % Avail S/C Power Reqd/Crr 0.78 % Carrier Info Rate 256 Kbps % Xponder Bandwidth Reqd/Crr 2.67 % FEC Code Rate 0.500 Clear Sky Link Margin 1.0 dB Crr Xmission Rate 256 Kbps Contract EIRP at reference contour 26.4 dBw CARRIER Min Reqd Ebt/No -0.9 dB LINK PERFORMANCE Cl Sky Up Fade Dn Fade Unit DATA No of bits/symbol 2.0 Bits Demod BT Product 1.00 Satellite SFD -97.0 -97.0 -97.0 dBW/m2 Spreading factor 4.00 Agg Input B.O. 6.0 6.0 6.0 dB Spread Bandwidth 1024 kHz Input Backoff/Crr 27.1 28.1 27.1 dB Crr Spacing Fctr 1.41 x Rs Crr Flux Density -124.1 -125.1 -124.1 dBW/m2 Carrier Spacing 1440 kHz Gain of a Sq meter 44.4 44.4 44.4 dBi Satellite Telstar 11 AO up US UPLINK Uplink Path Losses 208.1 209.1 208.1 dB Location -37.0 WL BUDGET Carrier Up EIRP 39.6 39.6 39.6 dBW Hub EIRP Contour 47.0 dBW Satellite G/T -1.0 -1.0 -1.0 dB/K Remote G/T Contour -1.0 dB/K Attn Setting 0.0 dB SATELLITE Xponder Gain 190.9 dB C/N Uplink -1.0 -2.0 -1.0 dB DATA SFD -97.0 dBW/m2 Xponder Bandwidth 54.0 MHz Saturation EIRP 47.0 47.0 47.0 dBW Agg Input BO 6.0 dB Agg Output B.O. 3.5 3.5 3.5 dB Agg Output BO 3.5 dB Output Backoff/Crr 24.6 25.6 24.6 dB Uplink Frequency 14.0900 GHz Carrier Dn EIRP 22.4 21.4 22.4 dBW Dnlink Frequency 11.7900 GHz DOWNLINK Dnlink Path Losses 205.8 205.8 211.0 dB Tx Antenna Dia 0.51 meters BUDGET Rx Pointing Losses 0.4 0.4 0.4 dB HPA Max Output Pwr 25.0 Watts Cl Sky E/S G/T 35.6 35.6 35.6 dB/K Degradation in G/T 0.0 0.0 3.9 dB Tx Antenna Gain 33.4 dBi Tx Pointing Losses 0.3 dB C/N Downlink 20.3 19.3 11.3 dB C/N Uplink -1.0 -2.0 -1.0 dB GROUND Rx Antenna Dia 7.6 meters C/N Downlink 20.3 19.3 11.3 dB SEGMENT Rx Antenna Effcy 62 % C/I Intermod (S/C) 13.3 12.3 13.3 dB DATA Rx Antenna Gain 57.4 dBi C/I Uplink Adj Sat 7.9 6.9 7.9 dB Rx Pointing Losses 0.4 dB COMPOSITE C/I Downlink Adj Sat 26.1 25.1 26.1 dB Pre LNA Losses 0.1 dB LINK C/I Xpol 18.3 17.3 14.0 dB LNA Noise Temp 90 K C/I Adjacent Carrier 17.0 16.0 17.0 dB Ant,etc Temp 50 K Cl Sky Noise Temp 140 K C/(Nu,d) -1.0 -2.0 -1.3 dB C/(Nu,d,ims/c) -1.2 -2.2 -1.4 dB Rx Clr Sky G/T 35.6 dB/K C/(Nu,d,im,i)Total -1.8 -2.8 -2.1 dB Uplink Rain Attn 1.0 dB LINK MARGIN 1.0 0.0 0.7 dB RAIN Dnlink Rain Attn 5.2 dB MARGINS Target Link Availability 96.0 % Minimum Ebi/No 2.1 dB Tx E/S Location Montreal Island, NU MODEM Minimum Reqd Ebt/No -0.9 dB Tx E/S Latitude 67.8 N 10*log(Rbt/Noise BW) -3.0 dB SITE Tx E/S Longitude -96.1 W Minimum Reqd C/N -2.8 dB GEOGRAPHIC Tx E/S Elev Angle 2.5 deg DATA Rx E/S Location Germantown RF Head Max Output Power 25.0 Watts Rx E/S Latitude 39.2 N Misc Feed Losses etc 0.0

Rx E/S Longitude -77.2 W EARTH E/S EIRP Reqd twds S/C 39.6 dBW Rx E/S Elev Angle 28.7 deg STATION (Note: reqd to achieve link margin) HPA Tx Pointing Losses 0.3 dB XPOL S/C Isolation 36.0 dB Max EIRP Avail towards S/C 39.8 dBW ISOLATION Tx E/S Isolation 35.0 dB DATA Rx E/S Isolation 25.0 dB RF Head Output BO (Cl Sky) 7.5 dB Uplnk Free Sp Loss 207.8 dB MISC Dnlnk Free Sp Loss 205.6 dB Uplink Pwr Dens into Antenna -17.6 dBW/4kHz LOSSES Uplink Atmos Attn 0.3 dB PSD Limit for compliant antenna -14.0 dBW/4kHz Dnlink Atmos Attn 0.2 dB PSD Limit adjusted for sidelobes -17.4 dBW/4kHz

6/16/2010 HughesNet LINK BUDGET 12:16 PM Satellite: Telstar 11 US up AO dn 0.51 m Remote Located in Montreal Island, NU Crr EIRP Density = 6.0 dBW/4 KHz BASELINE PARAMETERS Value Unit SUMMARY % Avail S/C Power Reqd/Crr 35.4 % Max. No of Crrs/Xponder 2 % Xponder Bandwidth Reqd/Crr 22.3 % Carrier Info Rate 5000 Kbps Clear Sky Link Margin 2.1 dB Net FEC Code Rate 0.500 Transmit Symbol Rate 5000 Ksps Contract EIRP at reference contour 37.4 dBw CARRIER Min Reqd Ebt/No -1.8 dB LINK PERFORMANCE Cl Sky Up Fade Dn Fade Unit DATA No of bits/symbol 2.0 Bits Satellite SFD -90.5 -90.5 -90.5 dBW/m2 Demod BT Product 1.00 Agg Input B.O. 6.0 6.0 6.0 dB Crr Noise Bandwidth 5000 KHz Input Backoff/Crr 11.1 11.1 11.1 dB Carrier Spacing 6000 KHz Crr Flux Density -101.6 -101.6 -101.6 dBW/m2 Satellite Telstar 11 US up AO dn UPLINK Gain of a Sq meter 44.3 44.3 44.3 dBi Location -37.0 WL BUDGET Uplink Path Losses 207.4 214.8 207.4 dB EIRP Contour at Remote 45.0 dBW Carrier Up EIRP 61.5 68.9 61.5 dBW G/T Contour at Hub 3.5 dB/K Satellite G/T 3.5 3.5 3.5 dB/K Attn Setting 11.0 dB SATELLITE Xponder Gain 182.3 dB C/N Uplink 19.2 19.2 19.2 dB DATA SFD -90.5 dBW/m2 EIRP Contour 45.0 45.0 45.0 dBW Xponder Bandwidth 27.0 MHz Agg Output B.O. 3.5 3.5 3.5 dB Agg Input BO 6.0 dB Output Backoff/Crr 8.0 8.0 8.0 dB Agg Output BO 3.5 dB Carrier Dn EIRP 36.4 36.4 37.0 dBW Uplink Frequency 13.918 GHz DOWNLINK Dnlink Path Losses 206.3 206.3 206.3 dB Dnlink Frequency 11.618 GHz BUDGET Rx Pointing Losses 0.2 0.2 0.2 dB Tx Antenna Dia 7.6 meters Cl Sky E/S G/T 12.2 12.2 12.2 dB/K HPA Max Output Pwr 400.0 Watts Degradation in G/T 0.0 0.0 0.1 dB Tx Antenna Gain 58.8 dBi C/N Downlink 3.8 3.8 4.3 dB Tx Pointing Losses 0.5 dB C/N Uplink 19.2 19.2 19.2 dB GROUND C/N Downlink 3.8 3.8 4.3 dB SEGMENT Rx Antenna Dia 0.51 meters C/I Intermod (S/C) 22.4 22.4 22.4 dB DATA C/I Uplink Adj Sat 33.6 33.6 33.6 dB Rx Antenna Gain 31.8 dBi COMPOSITE C/I Dnlink Adj Sat 17.7 17.7 17.7 dB Rx Pointing Losses 0.2 dB LINK C/I Xpol 18.4 15.4 18.4 dB Pre LNA Losses 0.3 dB C/I Intermod (E/S) 32.8 18.0 32.8 dB LNA Noise Temp 38 K Ant,etc Temp 28 K C/(Nu,d) 3.7 3.7 4.1 dB Cl Sky Noise Temp 66 K C/(Nu,d,ims/c) 3.6 3.6 4.1 dB Rx Clr Sky G/T 12.2 dB/K C/(Nu,d,im,i)Total 3.3 3.0 3.7 dB Uplink Rain Attn 7.4 dB LINK MARGIN 2.1 1.8 2.5 dB RAIN Dnlink Rain Attn 0.0 dB Minimum Reqd Ebi/No 1.2 dB MARGINS Up Fade Pwr Cntrl 7.4 dB MODEM Minimum Reqd Ebt/No -1.8 dB Link Availability 96.0 % 10*log(Rbt/Noise BW) 3.0 dB Tx E/S Location Germantown Minimum Reqd C/N 1.2 dB Tx E/S Latitude 39.2 N E/S EIRP/Crr Reqd (Cl Sky) 61.5 dBW SITE Tx E/S Longitude -77.2 W Tx Gain - Pointing Loss 58.3 dB GEOGRAPHIC Tx E/S Elev Angle 29 deg EARTH Waveguide Losses 6.0 dB DATA STATION Tx Power Reqd/Cxr (clear sky) 9.2 dBW Rx E/S Location Montreal Island, NU HPA 8.4 watts

Rx E/S Latitude 67.8 N Uplink Power Control 7.4 dB Rx E/S Longitude -96.1 W TX Power Reqd/Cxr (full UPC) 16.6 dBW Rx E/S Elev Angle 2.5 deg 46.1 watts XPOL S/C Isolation 36.0 dB ISOLATION Tx E/S Isolation 35.0 dB DATA Rx E/S Isolation 20.0 dB Uplnk Free Sp Loss 207.1 dB Dnlink EIRP Dens @ Beam Peak (45.4 dBW) 6.0 dBW/4KHz MISC Dnlnk Free Sp Loss 206.1 dB PSD Limit for VSAT Blanket Licence 6.0 dBW/4KHz LOSSES Uplink Atmos Attn 0.3 dB Dnlink Atmos Attn 0.2 dB

A lb e r s p ro je c tio n 1 2 N 6 0 N z e r o 7 0 N 4 0 W s ca l e 9 o ff se t 3 ,3 5M B P S & 51 2 K S X 4 R A T E 1/3 35 D EG T E L S T A R 1 1 N D V B -S 2 H X - - R O W 4 4 - - 5 M S & 5 1 2 K S -- T E C O M A N T E N N A ( E IR P =4 1 .8 D B W )


Document Created: 2010-07-07 13:57:58
Document Modified: 2010-07-07 13:57:58
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