CFCallsignFinder

Search Watchlist

Track FCC amateur radio vanity callsign availability. Data updated daily.

Legal & Info

Pricing FAQ Terms of Service Privacy Policy

© 2026 CallsignFinder. All rights reserved.

FCC data sourced from FCC Universal Licensing System. Not affiliated with the FCC.

Watchlist Search Account

Home/Search/K5STU

← Back to results

K5STU

Active1x3District 5

Competitive callsign — 1 application filed with the FCC.

License HolderSMITH, STUART M

License ClassTechnician

Min. Class RequiredGeneral

LocationAustin, TX

Grant DateMay 19, 2020

Expiration DateMay 19, 2030

K5STU is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by SMITH, STUART M in Austin, TX. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by SMITH, STUART M on Apr 29, 2020. K5STU has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

-.- ..... ... - ..-

CW Weight: 23 units(Light (fast to send))

Voice Phonetics

Kilo Five Sierra Tango Uniform

Readability: 7/10(Good readability)

License History

License IssuedMay 19, 2020
Vanity Callsign GrantedMay 19, 2020
License ExpiredApr 29, 2020
License RenewedApr 15, 2008
License ModifiedJun 6, 2000

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

SMITH, STUART MFiled Apr 29, 2020
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← K5STT K5STV →

FCC data as of Sep 3, 2026

K5STU FCC Vanity Status: 1 Competing Application & History