Attachment Attachment 2 & 3

This document pretains to SES-STA-INTR2019-03761 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTAINTR201903761_1995066

BlackSky Global, LLC Attachment 2 Request for Special Temporary Authority SRI 60’ Dish Page 1 Technical and Operational Description E1. Site Identifier: SRI 60 Foot Diameter Parabolic Reflector E2. Contact Name: Javier Guzman E3. Street Address or Area of Operation: Stanford University Foothills E4. State: CA E5. Call Sign: N/A E6. Phone Number: 954-636-0147 E7. City: Palo Alto E8. Country: United States E9. Zip Code: 94305 E11. Latitude: 37° 24’ 10.9” N E12. Longitude: 122° 10’ 26.7” W E13. Lat/Long Coordinates are: NAD 83 E14. Site Elevation (AMSL): 146 Meters E15. If the proposed antenna(s) operate in the Fixed Satellite Service (FSS) with geostationary satellites, do(es) the proposed antenna(s) comply with the antenna gain patterns specified in Section 25.209(a) and (b) as demonstrated by the manufacturer's N/A qualification measurement? If NO, provide as a technical analysis showing compliance with two-degree spacing policy. E16. If the proposed antenna(s) do not operate in the Fixed Satellite Service (FSS), or if they operate in the Fixed Satellite Service (FSS) with non-geostationary satellites, do(es) the proposed antenna(s) comply with the antenna gain patterns specified in Section N/A 25.209(a2) and (b) as demonstrated by the manufacturer's qualification measurements? E17. Is the facility operated by remote control? If YES, provide the location and No telephone number of the control point. E18. Is frequency coordination required? If YES, attach a frequency coordination report. No E19. Is coordination with another country required? If YES, attach the name of the N/A country(ies) and plot of coordination contours E20. FAA Notification - (See 47 CFR Part 17 and 47 CFR part 25.113(c)) Where FAA notification is required, have you attached a copy of a completed FCC Form 854 and/or N/A the FAA's study regarding the potential hazard of the structure to aviation? FAILURE TO COMPLY WITH 47 CFR PARTS 17 AND 25 WILL RESULT IN THE RETURN OF THIS APPLICATION.

BlackSky Global, LLC Attachment 2 Request for Special Temporary Authority SRI 60’ Dish Page 2 POINTS OF COMMUNICATION Satellite Name E21. Common Name: E22. ITU Name: E23. Orbit Location: NGSO E24. Country: United States POINTS OF COMMUNICATION (Destination Points) E25. Site Identifier E26. Common Name E27. Country United States ANTENNA Site ID E.28. E29. E30. E31. E32 Antenna E41/42. Antenna Gain Antenna Quantity Manufacturer Model Size (m) Transmit or Receive (__dBi at ID __GHz) SRI 60’ SRI 531 parabolic 1 SRI International 18m 35.5dBi at 0.4502GHz 60’ dish E.28. E33/34. E35. E36. E37. Building E38. Max Total E39. Maximum E40. Total Antenna Diameter Above Above Height Input Power at Antenna EIRP for all ID Minor/Major Ground Sea Above Antenna Height Above Carriers (m) Level (m) Level (m) Ground Level Flange (W) Rooftop (m) (dBW) (m) SRI 60’ parabolic 18m 24m 146m N/A 20 N/A 48.5 dish

BlackSky Global, LLC Attachment 2 Request for Special Temporary Authority SRI 60’ Dish Page 3 FREQUENCY E28. E 43/44. Frequency E45. T/R E46. Antenna E47. E48. Max EIRP E49. Max EIRP E50. Modulation and Services Antenna Band (MHz) Mode Pol (H, V, L, R) Emission per Carrier Density per Carrier ID Designator (dBW) (dBW/4KHz) SRI 60’ 450.177875 -- T R 30K0F1D 48.5 41.5 GMSK, data Dish 450.222125 401.477875 – SRI 60’ 401.522125 R L, R 30K0F1D n/a n/a GMSK, data Dish (TT&C downlink) -- -- FREQUENCY COORDINATION E28. E 51. E52/53. Frequency E454/55 Range of E56. Earth E57. Earth E58. Earth E59. Earth E60. Max EIRP Antenna Satellite Limits (MHz) Satellite Arc Station Az. Station Station Az. Station Density toward ID Orbit Eastern/Western Angle Elevation Angle Western Elevation the Horizon Type Limit Eastern Limit Angle Lower Limit Angle Upper (dBW/4KHz) Limit Limit SRI 60’ 450.177875 -- NGSO 0.0/0.0 0.0° 6.0° 360° 85.0° 9.5 Dish 450.222125 401.477875 – SRI 60’ NGSO 401.522125 0.0/0.0 0.0° 6.0° 360° 85.0° n/a Dish (TT&C downlink)

BlackSky Global, LLC Attachment 2 Request for Special Temporary Authority SRI 150’ Dish Page 4 Technical and Operational Description E1. Site Identifier: SRI 150 Foot Diameter Parabolic Reflector E2. Contact Name: Javier Guzman E3. Street Address or Area of Operation: Stanford University Foothills E4. State: California E5. Call Sign: N/A E6. Phone Number: 954-636-0147 E7. City: Palo Alto E8. Country: United States E9. Zip Code: 94305 E11. Latitude: 37° 24’ 30.9” N E12. Longitude: 122° 10’ 46.6” W E13. Lat/Long Coordinates are: NAD 83 E14. Site Elevation (AMSL): 152 Meters E15. If the proposed antenna(s) operate in the Fixed Satellite Service (FSS) with geostationary satellites, do(es) the proposed antenna(s) comply with the antenna gain patterns specified in Section 25.209(a) and (b) as demonstrated by the manufacturer's N/A qualification measurement? If NO, provide as a technical analysis showing compliance with two-degree spacing policy. E16. If the proposed antenna(s) do not operate in the Fixed Satellite Service (FSS), or if they operate in the Fixed Satellite Service (FSS) with non-geostationary satellites, do(es) the proposed antenna(s) comply with the antenna gain patterns specified in Section N/A 25.209(a2) and (b) as demonstrated by the manufacturer's qualification measurements? E17. Is the facility operated by remote control? If YES, provide the location and No telephone number of the control point. E18. Is frequency coordination required? If YES, attach a frequency coordination report. No E19. Is coordination with another country required? If YES, attach the name of the N/A country(ies) and plot of coordination contours E20. FAA Notification - (See 47 CFR Part 17 and 47 CFR part 25.113(c)) Where FAA notification is required, have you attached a copy of a completed FCC Form 854 and/or N/A the FAA's study regarding the potential hazard of the structure to aviation? FAILURE TO COMPLY WITH 47 CFR PARTS 17 AND 25 WILL RESULT IN THE RETURN OF THIS APPLICATION.

BlackSky Global, LLC Attachment 2 Request for Special Temporary Authority SRI 150’ Dish Page 5 POINTS OF COMMUNICATION Satellite Name E21. Common Name: E22. ITU Name: E23. Orbit Location: NGSO E24. Country: United States POINTS OF COMMUNICATION (Destination Points) E25. Site Identifier E26. Common Name E27. Country United States ANTENNA Site ID E.28. E29. E30. E31. E32 Antenna E41/42. Antenna Gain Antenna Quantity Manufacturer Model Size (m) Transmit or Receive (__dBi at ID __GHz) SRI 150’ SRI 522 parabolic 1 SRI International 45m 43dBi at 0.4502GHz 150’ dish E.28. E33/34. E35. E36. E37. Building E38. Max Total E39. Maximum E40. Total Antenna Diameter Above Above Height Above Input Power at Antenna Height EIRP for all ID Minor/Major Ground Sea Level Ground Level Antenna Flange Above Rooftop Carriers (m) Level (m) (m) (m) (W) (m) (dBW) SRI 150’ 45m 55m 152m 1.5m 20 45m 56 parabol ic dish

BlackSky Global, LLC Attachment 2 Request for Special Temporary Authority SRI 150' Dish Page 6 FREQUENCY E28. E 43/44. Frequency E45. T/R E46. Antenna E47. E48. Max EIRP E49. Max EIRP E50. Modulation and Services Antenna Band (MHz) Mode Pol (H, V, L, R) Emission per Carrier Density per Carrier ID Designator (dBW) (dBW/4KHz) SRI 150’ 450.177875 -- T R 30K0F1D 56 49 GMSK, data Dish 450.222125 401.477875 – SRI 150’ 401.522125 R L, R 30K0F1D n/a n/a GMSK, data Dish (TT&C downlink) FREQUENCY COORDINATION E28. E 51. E52/53. Frequency E454/55 Range of E56. Earth E57. Earth E58. Earth E59. Earth E60. Max EIRP Antenna Satellite Limits (MHz) Satellite Arc Station Az. Station Station Az. Station Density toward ID Orbit Eastern/Western Angle Elevation Angle Western Elevation the Horizon Type Limit Eastern Limit Angle Lower Limit Angle Upper (dBW/4KHz) Limit Limit SRI 150’ 450.177875 -- NGSO 0.0/0.0 0.0° 5.0° 360° 85.0° 14 Dish 450.222125 401.477875 – SRI 150’ NGSO 401.522125 0.0/0.0 0.0° 5.0° 360° 85.0° n/a Dish (TT&C downlink)

BlackSky Global, LLC Attachment 3 Request for Special Temporary Authority Page 1 RADIATION HAZARD STUDY FOR 60’ AND 150’ DISHES IN PALO ALTO, CA The FCC adopted new guidelines and procedures in 1996 for evaluating environmental effects of radio frequency (RF) emissions. In order to provide assistance in determining whether proposed or existing transmitting facilities comply with the new guidelines, the FCC Office of Engineering and Technology revised OET Bulletin 65. The revised version updates limits for Maximum Permissible Exposure (MPE) in terms of electric and magnetic field strength and power density for transmitters operating at frequencies between 300 kHz and 100 GHz. This bulletin was adopted by the FCC in their General Docket No. 97-303 on August 25, 1997. In order to comply with the requirements of the Report and Order, calculations to determine the power flux densities in the far field, near field, and reflector regions of the earth station antenna have been made and are contained in this study. The FCC guidelines incorporate two separate tiers of exposure limits that are dependent on the situation in which the exposure takes place and the status of the individuals who are subject to exposure. The earth station transmitting equipment and antenna are located within a controlled area and not accessible to the general public. Entry is restricted to employees who have been made fully aware of the potential for human exposure and can exercise control over their exposure. Therefore occupational / controlled exposure maximum power density limits are used in this study. The FCC Office of Engineering and Technology suggests a method for calculating the maximum values of the power densities emanating from an aperture antenna in OET bulletin 65. This method is used to determine the power densities associated with the 60’ and 150’ satellite antennae as follows:

BlackSky Global, LLC Attachment 3 Request for Special Temporary Authority Page 2 Main Parameter Symbol Formula Value Units Notes Dish Diameter D Input 18 m Dish Surface Area A_surface Pi * D ^ 2 / 4 254.469004941 M^2 Frequency F Input 450.2 MHz Wavelength lambda 300/F 0.666370502 m Transmit Power P Input 20 W Max Antenna Gain (dBi) G_max Input 35.5 dBi Per SRI, off-axis gain is 32 dB down at horizon Off-axis Antenna Gain (dBi) G_es Input 3.5 dBi when dish at lowest elevation (6 degrees) Off-axis Antenna Gain (factor) G 10^(G_es/10) 2.23872113857 n/a Effective Aperture A_e G * lambda ^ 2 / 4 / pi 0.07910822937 M^2 See Eq. 14 in FCC OET Bulletin 65 Pi pi Constant 3.14159265359 n/a Off-axis Antenna Efficiency (approximate) eta A_e / A_surface 0.0003108757 n/a See Eq. 14 in FCC OET Bulletin 65 Far Field Range R_ff .6D^2/lambda 291.7296 m See Eq. 16 in FCC OET Bulletin 65 Off-axis Power Density in Far Field S_ff G*P/(4*pi*R_ff^2) 4.1865775E-05 W/m^2 See Eq. 18 in FCC OET Bulletin 65 4.1865775E-06 mW/cm^2 Near Field Range R_nf D^2/(4*lambda) 121.554 m See Eq. 12 in FCC OET Bulletin 65 Max Off-axis Power Density in Near Field S_nf 16 * eta * P / (pi * D ^ 2) 9.7733144E-05 W/m^2 See Eq. 13 in FCC OET Bulletin 65 9.7733144E-06 mW/cm^2 Transition Region Range R_t assumed to be R_nf 121.554 Max Transition Region Power Density S_tz S_nf*R_nf/R_t 9.7733144E-05 W/m^2 See Eq. 16 in FCC OET Bulletin 65 9.7733144E-06 mW/cm^2 Power Density between Antenna and Ground S_g 4 * P/A_surface 0.3143801345 W/m^2 See Eq. 11 in FCC OET Bulletin 65 0.03143801345 mW/cm^2 Limits for General Population/Uncontrolled Exposure (MPE) Frequency Range (MHz) Power Density (mW/cm^2) 30-300 0.2 0.2 300-1500 Frequency(MHz) / 1500 0.30013333333 1500-100,000 1 1 Limits for Occupational/Controlled Exposure (MPE) Frequency Range (MHz) Power Density (mW/cm^2) 30-300 1 1 300-1500 Frequency(MHz) / 300 1.50066666667 1500-100,000 5 5 Summary Expected Radiation levels for Uncontrolled Environment Region Symbol Value Limit Hazard Assessment Notes Assumes person at antenna level; but dish several meters off ground so power densities Far Field S_ff 4.1865775336718E-06 0.30013333333 Satisfies FCC actually lower. Applies to other regions as well. Near Field S_nf 9.77331435545065E-06 0.30013333333 Satisfies FCC Transition Region S_tz 9.77331435545065E-06 0.30013333333 Satisfies FCC Between Antenna and Ground S_g 0.031438013450249 0.30013333333 Satisfies FCC Expected Radiation levels for Controlled Environment Region Symbol Value Limit Hazard Assessment Notes Far Field S_ff 4.1865775336718E-06 1.50066666667 Satisfies FCC Near Field S_nf 9.77331435545065E-06 1.50066666667 Satisfies FCC Transition Region S_tz 9.77331435545065E-06 1.50066666667 Satisfies FCC Between Antenna and Ground S_g 0.031438013450249 1.50066666667 Satisfies FCC Results of this hazard study indicate that the antenna does not exceed the MPE limit for Occupational/ Controlled Exposure in the 300 – 1,500 MHz range for both controlled and uncontrolled regions of the antenna. Based on this study of predicted radio frequency levels, the conclusion is that the operation of this satellite earth station meets OET Bulletin 65 maximum permissible exposure limits and that no harmful effects will occur to station personnel or anyone within proximity of the station. Whenever they are required to work on the radiating or reflecting parts of the antenna structure, the transmitter will be turned off. Therefore, in accordance with 47 CFR § 1.1307 (b) of the Commission's Rules, preparation and submission of an Environmental Assessment (EA) is not required. Page 1

BlackSky Global, LLC Attachment 3 Request for Special Temporary Authority Page 3 Main Parameter Symbol Formula Value Units Notes Dish Diameter D Input 45.72 m Dish Surface Area A_surface Pi * D ^ 2 / 4 1641.73223228 M^2 Frequency F Input 450.2 MHz Wavelength lambda 300/F 0.666370502 m Transmit Power P Input 20 W Max Antenna Gain (dBi) G_max Input 43 dBi Per SRI, off-axis gain is 35 dB down at horizon Off-axis Antenna Gain (dBi) G_es Input 8 dBi when dish at lowest elevation (5 degrees) Off-axis Antenna Gain (factor) G 10^(G_es/10) 6.3095734448 n/a Effective Aperture A_e G * lambda ^ 2 / 4 / pi 0.22295728338 M^2 See Eq. 14 in FCC OET Bulletin 65 Pi pi Constant 3.14159265359 n/a Off-axis Antenna Efficiency (approximate) eta A_e / A_surface 0.00013580612 n/a See Eq. 14 in FCC OET Bulletin 65 Far Field Range R_ff .6D^2/lambda 1882.12268736 m See Eq. 16 in FCC OET Bulletin 65 Off-axis Power Density in Far Field S_ff G*P/(4*pi*R_ff^2) 2.8348121E-06 W/m^2 See Eq. 18 in FCC OET Bulletin 65 2.8348121E-07 mW/cm^2 Near Field Range R_nf D^2/(4*lambda) 784.2177864 m See Eq. 12 in FCC OET Bulletin 65 Max Off-axis Power Density in Near Field S_nf 16 * eta * P / (pi * D ^ 2) 6.6176989E-06 W/m^2 See Eq. 13 in FCC OET Bulletin 65 6.6176989E-07 mW/cm^2 Transition Region Range R_t assumed to be R_nf 784.2177864 Max Transition Region Power Density S_tz S_nf*R_nf/R_t 6.6176989E-06 W/m^2 See Eq. 16 in FCC OET Bulletin 65 6.6176989E-07 mW/cm^2 Power Density between Antenna and Ground S_g 4 * P/A_surface 0.04872901831 W/m^2 See Eq. 11 in FCC OET Bulletin 65 0.00487290183 mW/cm^2 Limits for General Population/Uncontrolled Exposure (MPE) Frequency Range (MHz) Power Density (mW/cm^2) 30-300 0.2 0.2 300-1500 Frequency(MHz) / 1500 0.30013333333 1500-100,000 1 1 Limits for Occupational/Controlled Exposure (MPE) Frequency Range (MHz) Power Density (mW/cm^2) 30-300 1 1 300-1500 Frequency(MHz) / 300 1.50066666667 1500-100,000 5 5 Summary Expected Radiation levels for Uncontrolled Environment Region Symbol Value Limit Hazard Assessment Notes Assumes person at antenna level; but dish several meters off ground so power densities Far Field S_ff 2.83481206261804E-07 0.30013333333 Satisfies FCC actually lower. Applies to other regions as well. Near Field S_nf 6.6176988730675E-07 0.30013333333 Satisfies FCC Transition Region S_tz 6.61769887306749E-07 0.30013333333 Satisfies FCC Between Antenna and Ground S_g 0.004872901830592 0.30013333333 Satisfies FCC Expected Radiation levels for Controlled Environment Region Symbol Value Limit Hazard Assessment Notes Far Field S_ff 2.83481206261804E-07 1.50066666667 Satisfies FCC Near Field S_nf 6.6176988730675E-07 1.50066666667 Satisfies FCC Transition Region S_tz 6.61769887306749E-07 1.50066666667 Satisfies FCC Between Antenna and Ground S_g 0.004872901830592 1.50066666667 Satisfies FCC Results of this hazard study indicate that the antenna does not exceed the MPE limit for Occupational/ Controlled Exposure in the 300 – 1,500 MHz range for both controlled and uncontrolled regions of the antenna. Based on this study of predicted radio frequency levels, the conclusion is that the operation of this satellite earth station meets OET Bulletin 65 maximum permissible exposure limits and that no harmful effects will occur to station personnel or anyone within proximity of the station. Whenever they are required to work on the radiating or reflecting parts of the antenna structure, the transmitter will be turned off. Therefore, in accordance with 47 CFR § 1.1307 (b) of the Commission's Rules, preparation and submission of an Environmental Assessment (EA) is not required. Page 1


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