Virginia Tech - Hume Center

1402-EX-ST-2019

Status: Pending

WO9XID
2019-07-31

Application Form:

OET Special Temporary Authority Report

FEDERAL COMMUNICATIONS COMMISSION
APPLICATION FOR SPECIAL TEMPORARY AUTHORITY

Applicant Name

Name of Applicant:

Virginia Tech - Hume Center

Address

Attention:	Zachary James Leffke
Street Address:	1991 Kraft Drive, Suite 2019
P.O. Box:	24061
City:	Blacksburg
State:	VA
Zip Code:	24061
Country:	United States
E-Mail Address:	[email protected]

Best Contact

Give the following information of person who can best handle inquiries pertaining to this application:
Last Name: Leffke
First Name: Zachary
Title: Research Associate
Phone Number: 5408086305

Explanation

Please explain in the area below why an STA is necessary:
This application is part of an experimental high altitude balloon flight to test novel radio systems developed at VT. The maximum flight duration is 12 hours. The original launch window for the flight was scheduled for a two week period in late April / Early May, then was delayed until the month of July. Therefore, temporary authorization is appropriate. PLEASE NOTE: The flight did NOT occur during the original intended flight window, nor during the second rescheduled flight window, due to payload integration delays. This request is simply a requested change to the Operation Start and Stop Dates to adjust to the rescheduled launch window around Late Aug (still within the 6 month window of the original STA granted). All other information (exhibits, station details, etc.) are identical to the previous request.

Purpose of Operation

Please explain the purpose of operation:

To test novel radio systems. The radio systems will be utilized onboard the high altitude balloon and two mobile ground stations for the purposes of command and control of the payload and telemetry download during the flight.

Information

Callsign:	WO9XID
Class of Station:	MO
Nature of Service:	Experimental

Requested Period of Operation

Operation Start Date:	08/19/2019
Operation End Date:	09/09/2019

Manufacturer

Manufacturer	Model Number	No. Of Units	Experimental
List below transmitting equipment to be installed (if experimental, so state) if additional rows are required, please submit equipment list as an exhibit:
Semtech Semiconductor	SX1231	3	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):	Zachary James Leffke
Title of Applicant (if any):	Research Associate
Date:	2019-07-31 00:00:00.0

Station Location

	City	State	Latitude	Longitude	Mobile	Radius of Operation
			North	West	Flight level up to 65, 000FT, the boundary area is 39N to 46N latitude / 105W to 92W longitude

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? Yes
(a) Overall height above ground to tip of antenna in meters: 20000.00
(b) Elevation of ground at antenna site above mean sea level in meters: 457.00
(c) Distance to nearest aircraft landing area in kilometers: 13.78
(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: Antenna will be on board a high altitude balloon flying under FAA authorization. Please see the 'FAA Antenna Sketch' for a description of the flight profile.

Action	Frequency	Station Class	Output Power/ERP	Mean Peak	Frequency Tolerance (+/-)	Emission Designator	Modulating Signal
New	433.07500000-434.77500000 MHz	MO	2.000000 W 4.467000 W	P		25K0F1D	GMSK

	City	State	Latitude	Longitude	Mobile	Radius of Operation
	Sverdrup Township	South Dakota	North 43 42 1	West 96 42 28	Sverdrup Township, SD	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:
(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	433.07500000-434.77500000 MHz	MO	2.000000 W 27.200000 W	P		25K0F1D	GMSK

	City	State	Latitude	Longitude	Mobile	Radius of Operation
	Renner	South Dakota	North 43 42 1	West 96 42 28	Renner, SD	300.00

Action	Frequency	Station Class	Output Power/ERP	Mean Peak	Frequency Tolerance (+/-)	Emission Designator	Modulating Signal
New	433.07500000-434.77500000 MHz	MO	2.000000 W 27.200000 W	P		25K0F1D	GMSK

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