FEDERAL COMMUNICATIONS COMMISSION
APPLICATION FOR SPECIAL TEMPORARY AUTHORITY

Applicant Name
Name of Applicant:  Aerostar Technical Solutions

Address
Attention: Martin Harms
Street Address: 2231 Crystal Drive suite 515
P.O. Box:
City: Arlington
State: VA
Zip Code: 22202
Country: United States
E-Mail Address: martin.harms@ravenind.com

Best Contact
Give the following information of person who can best handle inquiries pertaining to this application:  
Last Name: Harms
First Name: Martin
Title: Project Engineer
Phone Number: 6053217162

Explanation
Please explain in the area below why an STA is necessary:
The STA is necessary to operate transmit testing equipment in support of the development of a communication MESH network for high altitude balloon systems. The transmitter will be utilized by a mobile Networked MIMO (MN-MIMO) .

Purpose of Operation
Please explain the purpose of operation:  The purpose of the operation is to conduct high-altitude balloon testing using Mobile Networked MIMO (MN-MIMO) radios in the Sioux Falls, SD area. The ground station is a temporary ground based mobile platform in place for the duration of the balloon flight only and will be used for command/control communications with the balloon and also to down-link high rate payload data from the balloon . The balloons may also relay data to other balloons in a mesh network, but at a significantly lower EIRP.

Information
Callsign: WT9XFY
Class of Station: MO
Nature of Service: Experimental

Requested Period of Operation
Operation Start Date: 02/01/2022
Operation End Date: 07/31/2022

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
Silvus Technologies SC4400 5 No
Silvus Technologies SC4200 5 No

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): Martin Harms
Title of Applicant (if any): Project Engineer
Date: 2021-12-22 00:00:00.0

Station Location
City State Latitude Longitude Mobile Radius of Operation
baltic South Dakota North  43  42  3 West  96  42  27 MOEA Baltic, SD Maximum altitude of 73,000-ft msl 400.00
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:   22250.00
(b) Elevation of ground at antenna site above mean sea level in meters:   1513.00
(c) Distance to nearest aircraft landing area in kilometers:   13.70
(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: None
Action Frequency Station Class Output Power/ERP Mean Peak Frequency Tolerance (+/-) Emission Designator Modulating Signal
Modified 4540.00000000-4560.00000000 MHz MO 100.000000 W 251.200000 W P 0.00200000 % 20M0D7W COFDM
City State Latitude Longitude Mobile Radius of Operation
Baltic South Dakota North  43  42  3 West  96  42  27 MOEB Baltic, SD 250 mile radius 400.00
Datum:  NAD 83
Is a directional antenna (other than radar) used?   Yes
Exhibit submitted:   Yes
(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
Modified 4540.00000000-4560.00000000 MHz MO 100.000000 W 111.500000 kW P 0.00200000 % 20M0D7W COFDM