FEDERAL COMMUNICATIONS COMMISSION
APPLICATION FOR SPECIAL TEMPORARY AUTHORITY

Applicant Name
Name of Applicant:  Northrop Grumman Systems Corporation

Address
Attention: c/o Wilkinson Barker Knauer, LLP
Street Address: 1800 M Street NW, Suite 800N
P.O. Box:
City: Washington
State: DC
Zip Code: 20036
Country:
E-Mail Address: lmontgomery@wbklaw.com

Best Contact
Give the following information of person who can best handle inquiries pertaining to this application:  
Last Name: Rodgers
First Name: Daniel
Title: Sr. Principal RF Microwave Design Engineer
Phone Number: 703-234-9063

Explanation
Please explain in the area below why an STA is necessary:
Northrop Grumman Systems Corporation hereby requests a sixty-day Special Temporary Authority (STA) extension for the NG-21 Cygnus spacecraft mission STA previously granted under File No. 0881-EX-ST-2024. This request is being filed to account for anticipated changes to the spacecraft departure date from the ISS. Please see the attached Exhibit I.

Purpose of Operation
Please explain the purpose of operation:  Northrop Grumman Systems Corporation hereby requests a sixty-day Special Temporary Authority (STA) extension for the NG-21 Cygnus spacecraft mission STA previously granted under File No. 0881-EX-ST-2024. This request is being filed to account for anticipated changes to the spacecraft departure date from the ISS. Please see the attached Exhibit I.

Information
Callsign: WX9XKA
Class of Station: MO
Nature of Service: Experimental

Requested Period of Operation
Operation Start Date: 01/31/2025
Operation End Date: 04/01/2025

Manufacturer
List below transmitting equipment to be installed (if experimental, so state) if additional rows are required, please submit equipment list as an exhibit:  
Manufacturer Model Number No. Of Units Experimental
L-3Harris Cincinnati Electronics 6354-PF4520-05 2 Yes
L-3Harris Cincinnati Electronics 6354-PF4520-06 2 Yes

Certification
Neither the applicant nor any other party to the application is subject to a denial of Federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862, because of a conviction for possession or distribution of a controlled substance. The applicant hereby waives any claim to the use of any particular frequency or electromagnetic spectrum as against the regulatory power of the United States because of the prvious use of the same, whether by license or otherwise, and requests authorization in accordance with this application. (See Section 304 of the Communications Act of 1934, as amended.) The applicant acknowledges that all statements made in this application and attached exhibits are considered material representations, and that all the exhibits part hereof and are incorporated herein as if set out in full in this application; undersigned certifies that all statements in this application are true, complete and correct to the best of his/her knowledge and belief and are made in good faith. Applicant certifies that construction of the station would NOT be an action which is likely to have a significant environmental effect. See the Commission's Rules, 47 CFR1.1301-1.1319.
Signature of Applicant (Authorized person filing form): Daniel Rodgers
Title of Applicant (if any): Sr. Principal RF MDE
Date: 2024-12-03 00:00:00.0

Station Location
City State Latitude Longitude Mobile Radius of Operation
North      West      LEO Spacecraft-415km altitude-51.6 degrees incl
Datum:  NAD 83
Is a directional antenna (other than radar) used?   No
Exhibit submitted:   No
(a) Width of beam in degrees at the half-power point:  
(b) Orientation in horizontal plane:  
(c) Orientation in vertical plane:  
Will the antenna extend more than 6 meters above the ground, or if mounted on an existing building, will it extend more than 6 meters above the building, or will the proposed antenna be mounted on an existing structure other than a building?   No
(a) Overall height above ground to tip of antenna in meters:  
(b) Elevation of ground at antenna site above mean sea level in meters:  
(c) Distance to nearest aircraft landing area in kilometers:  
(d) List any natural formations of existing man-made structures (hills, trees, water tanks, towers, etc.) which, in the opinion of the applicant, would tend to shield the antenna from aircraft:
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 2203.20000000- MHz MO 14.420000 W 7.110000 W M 0.00008000 % 5M93G1D SQPN
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 2287.50000000- MHz MO 23.280000 W 7.800000 W M 0.00018000 % 6M16G1D SQPN
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 2287.50000000- MHz MO 15.000000 W 5.020000 W M 0.00018000 % 6M16G1D SQPN
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 2287.50000000- MHz MO 15.000000 W 5.020000 W M 0.00018000 % 3M00G1D SQPSK
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
New 2287.50000000- MHz MO 15.000000 W 5.020000 W M 0.00018000 % 4M98G1D SQPSK