Experimental Licensing System

0606-EX-ST-2026

Christopher Kidd Walker

Experimental Licensing System filing 0606-EX-ST-2026 submitted by Christopher Kidd Walker.

Filing overview

StatusGranted
Call signWA8XCP
Date filed2026-04-08
Status date2026-07-09
FCC sourceView the FCC filing record

Special Temporary Authority application - Address

Attention:
Christopher Walker
City:
Tucson
Country:
United States
E-Mail Address:
cwalker@arizona.edu
P.O. Box:
85721
State:
AZ
Street Address:
5321 E. Placita Bosque, Steward Observatory
Zip Code:
85721

Special Temporary Authority application - Applicant Name

Name of Applicant:
Christopher Kidd Walker

Special Temporary Authority application - Best Contact

First Name:
Christopher
Last Name:
Walker
Phone Number:
5203312442
Title:
Professaor of Astronomy, University of Arizona

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:
2026-03-23 00:00:00.0
Signature of Applicant (Authorized person filing form):
Christopher K. Walker
Title of Applicant (if any):
Professor of Astronomy, University of Arizona

Special Temporary Authority application - Explanation

Please explain in the area below why an STA is necessary:
I am the faculty advisor for the University of Arizonas student satellite CatSat (K7CKW) which has been in operation on orbit since July 2024. The students are in daily communications with it. It is expected to remain in orbit to the end of this year. We have been approached by a company, Sedaro, who would like to test out some software on CatSat near the end of its life. In exchange, they would provide student training on the software and funds to the University for our SmallSat program. CatSat is licensed under Part 97 (using my amateur radio license as a space node). Since a commercial company is involved, a Part 5 Experimental License is needed for related communications between CatSat and its ground stations.

Special Temporary Authority application - Information

Callsign:
WA8XCP
Class of Station:
FX
Nature of Service:
Experimental

Special Temporary Authority application - Initial values - Requested Period of Operation

Operation Start Date:
06/01/2026

Special Temporary Authority application - Manufacturer

Equipment 1 Experimental
No
Equipment 1 Manufacturer
GOMSpace
Equipment 1 Model Number
GS100
Equipment 1 No. Of Units
1

Special Temporary Authority application - Purpose of Operation

Please explain the purpose of operation:
CatSat would be used as a platform for testing commercial software during the last 5 months of its orbital lifetime.

Special Temporary Authority application - Requested Period of Operation

Operation End Date:
11/30/2026
Operation Start Date:
07/09/2026

Frequencies

ActionLower MHzUpper MHzClassOutput WERP WEmissionSignal
New437.14700000437.22300000FX50.0000001230.00000075K0G1WGMSK 9600

Sites

SiteLocationCoordinatesOperating areaCountyRadius
Tucson, ArizonaNorth 32 14 13 West 110 57 31.00

Grant actions

DateCategoryDescription
2026-07-09GrantGrant Generated [Jul 9 2026]

Sources and provenance

SourceSource recordRetrievedMatch
ELS0606-EX-ST-20262026-07-29 04:48:07Source Primary
Selected field provenance
FieldDisplayed valueSourceObserved
StatusGrantedELS 0606-EX-ST-20262026-07-29 04:48:07
Applicant NameChristopher Kidd WalkerELS 0606-EX-ST-20262026-07-29 04:48:07
Call SignWA8XCPELS 0606-EX-ST-20262026-07-29 04:48:07
Receipt Date2026-04-08ELS 0606-EX-ST-20262026-07-29 04:48:07
Status Date2026-07-09ELS 0606-EX-ST-20262026-07-29 04:48:07

Documents

DocumentTypeDateStatus
Grant E-mail Notification generated [Jul 10 2026]Correspondence2026-07-10Available
Distinction Between Amateur And Part 5 ServiceText Documents2026-04-09Available
CatSat Technical DescriptionText Documents2026-04-09Available
CatSat Stop BuzzerText Documents2026-04-09Available
CatSat ODARText Documents2026-04-09Available
CatSat IARU coordination letterText Documents2026-04-09Available
Distinction Between Amateur And Part 5 ServiceText Documents2026-04-09Available
CatSat Technical DescriptionText Documents2026-04-09Available
CatSat Stop BuzzerText Documents2026-04-09Available
CatSat ODARText Documents2026-04-09Available
CatSat IARU coordination letterText Documents2026-04-09Available
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