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K9OZZ

Active1x3District 9

Competitive callsign — 4 applications filed with the FCC.

License HolderDONAHUE, ROBERT T

License ClassTechnician

Min. Class RequiredGeneral

LocationMESA, AZ

Grant DateDec 13, 2025

Expiration DateFeb 4, 2036

K9OZZ is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by DONAHUE, ROBERT T in MESA, AZ. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by Loiler, Mark V on Dec 26, 2007. K9OZZ has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 45 units(Heavy (slower to send))

Voice Phonetics

Kilo Nine Oscar Zulu Zulu

Readability: 8/10(High readability)

License History

License RenewedDec 13, 2025
License RenewedJul 12, 2016
License IssuedFeb 4, 2006
Vanity Callsign GrantedFeb 4, 2006

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Loiler, Mark VFiled Dec 26, 2007
Not awardedFCC ↗
Donahue, Robert TFiled Jan 17, 2006
Not awardedFCC ↗
James, Mary AFiled May 14, 2001
Not awardedFCC ↗
NELSON, LOUISFiled May 14, 2001

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← K9OZY K9PAA →

FCC data as of Jul 31, 2026

Not awarded

K9OZZ FCC Vanity Status: 4 Competing Applications & History