Rincon Research Corporation

0778-EX-ST-2012

Status: Grant Expired Due to New License

WF9XQI
2012-11-14

Documents and Communications: [refresh]

Description	Category	Date
Grant E-mail Notification generated [Nov 15 2012]	Correspondence	2012-11-15

Application Form:

OET Special Temporary Authority Report

FEDERAL COMMUNICATIONS COMMISSION
APPLICATION FOR SPECIAL TEMPORARY AUTHORITY

Applicant Name

Name of Applicant:

Rincon Research Corporation

Address

Attention:	Dr. Evan Iverson
Street Address:	101 N. Wilmot Road
P.O. Box:
City:	Tucson
State:	AZ
Zip Code:	85711
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: Iverson
First Name: Evan
Title: Chief Scientist
Phone Number: 520-519-4453

Explanation

Please explain in the area below why an STA is necessary:
An STA is necessary to allow a series of highly accurate HF ionospheric propagation measurements to be made in order to characterize time-varying effects that limit the ability to geolocate uncooperative HF transmitters. The collected RF data is required to develop a parametric channel model that can be used to correct for variability in time of arrival and frequency of arrival for signals associated with near-vertical-incident-skywave (NVIS) communication networks. Current ionospheric sounding systems (e.g., Digisondes) do not provide this unique type of information.

Purpose of Operation

Please explain the purpose of operation:

To make a series of phase-coherent measurements to characterize the temporal variability associated wth NVIS propagation channels. The purpose of this operation is to make a series of phase-coherent measurements to characterize the temporal variability associated wth NVIS propagation channels. The measurements will be made using a low-power (<100W) HF transmitter and a digitizing receiver that are phase locked and have precision time synchroniation through the use of highly accurate GPS time/frequency references. This will provide long-dwell, coherent oblique ionospheric sounding at a single frequency selected to be just below the F2 critical frequency. The transmitter will drive an NVIS antenna with vertical directivity and transmit a phase-coded signal designed to provide very high processing gain, thereby minimizing the required transmitting power. For each measurment trial, a single frequency of operation will need to be selected that is roughly in the range of 75% to 98% of the local critical frequency (foF2). Therefore, a set of authorized frequencies is desired that spans the range from ~4 MHz to ~12 MHz, with approximately 2 frequencies in each 1-MHz segment of this range (~16 frequencies total). Operations are planned for daylight hours and each measurement trial is expected to last less than 30 minutes, with no more than 2-3 trials per day. Trials are expected to occur only a few days per week on a sporadic basis througout the duration of the STA.

Information

Callsign:	WF9XQI
Class of Station:	FX
Nature of Service:	Experimental

Requested Period of Operation

Operation Start Date:	11/15/2012
Operation End Date:	04/14/2013

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:
Rincon Research Corporation	HF Coherent E1	1	Yes
Rincon Research Corporation	NVIS Antenna E1	1	Yes
Rincon Research Corporation	HF Coherent E1	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):	Evan Iverson
Title of Applicant (if any):	Chief Scientist
Date:	2012-09-25 00:00:00.0

Station Location

	City	State	Latitude	Longitude	Mobile	Radius of Operation
	Tucson	Arizona	North 32 13 26	West 100 31 51

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: 90.00
(b) Orientation in horizontal plane:
(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? 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	4.00000000-12.00000000 MHz	FX	100.000000 W 150.000000 W	P		30K0G1N	30000 Baud Maximum

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