Johns Hopkins University - Applied Physics Laboratory


Status: Pending

Application Form:
OET Special Temporary Authority Report

Applicant Name
Name of Applicant:  Johns Hopkins University - Applied Physics Laboratory

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

Best Contact
Give the following information of person who can best handle inquiries pertaining to this application:  
Last Name: Jensen
First Name: Robert
Title: Systems Engineer
Phone Number: 240-228-4549

Please explain in the area below why an STA is necessary:
A STA is required to support a short duration S-band RF transmission experiment. We envision a 1-hour of RF radiation time. This will be a one way communication to evaluate numerical algorithms with a CW wave form. The signal will be received by an aircraft with a commercial receiver on board and fly radial patterns from APL at altitude from 10ft agl to 30Kft agl in 5kft increments. This test is to verify our new waveform performance and a live test is required.

Purpose of Operation
Please explain the purpose of operation:  To support a short duration RF transmission experiment. To support a short duration RF transmission experiment. The objective of this development is to produce a telemetry transmitter waveform that will be more robust in challenging RF environments. Testing will be conducted using an airborne receiver under varying RF constraints. Bench testing has been concluded and flight testing is now required for validation.

Callsign: WN9XWA
Class of Station: FX
Nature of Service: Experimental

Requested Period of Operation
Operation Start Date: 03/01/2019
Operation End Date: 07/31/2019

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
Sandia National Lab ASTRA 1 Yes

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): Glen A. Long
Title of Applicant (if any): Section Supervisor
Date: 2019-02-04 00:00:00.0

Station Location
City State Latitude Longitude Mobile Radius of Operation
Laurel Maryland North  39  9  35 West  76  53  58 1.00
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:   20.00
(b) Orientation in horizontal plane:   315.00
(c) Orientation in vertical plane:   20.00
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?   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 2245.00000000-2288.00000000 MHz FX 10.000000 W 316.000000 W P 100.00000000 % 5M00M0D SOQPSK


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