Johns Hopkins University / Applied Physics Laboratory

FEDERAL COMMUNICATIONS COMMISSION APPLICATION FOR SPECIAL TEMPORARY AUTHORITY

Applicant Name

Name of Applicant:

Johns Hopkins University / Applied Physics Laboratory

Address

Attention:	Ron Schulze
Street Address:	11100 Johns Hopkins Road
P.O. Box:
City:	Laurel
State:	MD
Zip Code:	20723
Country:
E-Mail Address:	[email protected]

Best Contact

Give the following information of person who can best handle inquiries pertaining to this application:   Last Name: Schulze First Name: Ron Title: Engineer Phone Number: 443-955-3168

Explanation

Please explain in the area below why an STA is necessary: The Johns Hopkins University Applied Physics Laboratory (JHU/APL) is working on developmental radar signal processing. As part of this process it needs temporary on-air transmissions to account for atmospheric and propagation effects. We estimate on-air activities should not exceed a six month period. The length of each transmission will be less than 30 minutes

Purpose of Operation

Please explain the purpose of operation:

Experiment to transmit from APLs existing S-Band communications ground station to a low-Earth orbiting radar calibration sphere and back to a few antennas located at the Midway Research Center in Stafford Virginia. This test will prove that we can calibrate the relative position of an array of receive antennas.

Information

Callsign:	WQ9XZI
Class of Station:	FX
Nature of Service:	Experimental

Requested Period of Operation

Operation Start Date:	09/01/2020
Operation End Date:	03/01/2021

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
Communications & Power Industries	VK2200D3-D50	1	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):	Ron Schulze
Title of Applicant (if any):	DARC Mission System engineer
Date:	2020-08-14 00:00:00.0

Station Location

	City	State	Latitude	Longitude	Mobile	Radius of Operation
	Laurel	Maryland	North  39  10  2	West  76  53  55

Datum:  NAD 83 Is a directional antenna (other than radar) used?   Yes Exhibit submitted:   No (a) Width of beam in degrees at the half-power point:   0.50 (b) Orientation in horizontal plane:   360.00 (c) Orientation in vertical plane:   90.00 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?   Yes (a) Overall height above ground to tip of antenna in meters:   30.00 (b) Elevation of ground at antenna site above mean sea level in meters:   132.00 (c) Distance to nearest aircraft landing area in kilometers:   18.00 (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: The antenna is an 18.3 meter diameter parabolic dish/system. It operates in S/X-bands and supports various space missions. Impact to aviation is mitigated in several ways including shutting off transmissions when antenna is pointing below 10 degrees elevation (minimize impact on airport systems), no transmissions in the aviation bands, and a 0.5 deg 3dB beamwidth. (see Antenna Drawing exhibit)

Action	Frequency	Station Class	Output Power/ERP	Mean Peak	Frequency Tolerance (+/-)	Emission Designator	Modulating Signal
New	2058.50000000-2061.50000000 MHz	FX	2000.000000 W 100.000000 MW	P	0.10000000 %	1M64F0N	FSK

Action	Frequency	Station Class	Output Power/ERP	Mean Peak	Frequency Tolerance (+/-)	Emission Designator	Modulating Signal
New	2058.50000000-2061.50000000 MHz	FX	2000.000000 W 100.000000 MW	P	0.10000000 %	2M00Q1N	1 Mhz Gold Code

Action	Frequency	Station Class	Output Power/ERP	Mean Peak	Frequency Tolerance (+/-)	Emission Designator	Modulating Signal
New	2058.50000000-2061.50000000 MHz	FX	2000.000000 W 100.000000 MW	P	0.10000000 %	3M00Q1N	1 Mhz Gold Code

17750