Special Temporary Authority application - Applicant Name
Name of Applicant:
University of Washington
Special Temporary Authority application - Best Contact
First Name:
Michael
Last Name:
McCarthy
Phone Number:
2066852543
Title:
Research Associate Professor
Special Temporary Authority application - Certification
Applicant 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.
Date:
2019-02-23 00:00:00.0
Signature of Applicant (Authorized person filing form):
Michael McCarthy
Title of Applicant (if any):
Research Associate Professor
Special Temporary Authority application - Explanation
Please explain in the area below why an STA is necessary:
On 26Dec07, Tony Serafini of the FCC Office of Engineering and Technology Experimental Licensing Branch responded to an inquiry I had made, suggesting the STA was an appropriate tool for my application. An infrequent transmitting activity, which I had assumed was permitted, was recently identified as possibly not permitted. This activity, as explained below, is for university and high school level educational purposes. It uses a low power 433MHz transmitter with an omni-directional antenna. I would like to be able to continue this activity with the appropriate permissions.
Special Temporary Authority application - Information
Callsign:
WO9XDH
Class of Station:
MO
Nature of Service:
Experimental
Special Temporary Authority application - Manufacturer
Equipment 1 Experimental
Yes
Equipment 1 Manufacturer
NA
Equipment 1 Model Number
NA
Equipment 1 No. Of Units
4
Special Temporary Authority application - Purpose of Operation
Please explain the purpose of operation:
Research in atmospheric structure and radio communications using a transmitter as a sounder to make atmospheric temperature profiles and as a beacon to recover the transmitter. The purpose is to provide a simple inexpensive means for students to learn about radio communications and atmospheric structure. I help teach a class at University of Washington in which we use a low power radio transmitter in three exercises. One exercise, in a laboratory, is to build a circuit to modulate (OOK) an inexpensive off-the-shelf 433MHz SAW transmitter (hybrid circuit) using a 555 timer, whose pulse rate is temperature dependent. As a second exercise, we launch one of these student-built circuits on a 3ft helium balloon and use the received signal to provide a sounding of the atmospheric temperature profile from sea level to about 50000 feet. This measurement is done in conjunction with lectures about atmospheric structure. Students help set up receiver station, launch the balloon, and then analyze the recovered data. Finally, we use the device as a beacon, together with direction-finding equipment, to locate and recover a larger balloon payload which carries student-designed instrumentation into the stratosphere. The tracking/recovery is done after the balloon pops and returns to Earth. I have also done parts of this exercise as a volunteer at a local high school.
Special Temporary Authority application - Requested Period of Operation