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/KO4DO

← Back to results

KO4DO

Active2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderOHANESON, DONALD E

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationAppomattox, VA

Grant DateJan 5, 2021

Expiration DateJan 5, 2031

KO4DO is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by OHANESON, DONALD E in Appomattox, VA. 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 OHANESON, DONALD E on Dec 17, 2020. KO4DO has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 37 units(Moderate)

Voice Phonetics

Kilo Oscar Four Delta Oscar

Readability: 8/10(High readability)

License History

Administrative Update AppliedFeb 3, 2022
License IssuedJan 5, 2021
Vanity Callsign GrantedJan 5, 2021
License ExpiredApr 7, 2005

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

OHANESON, DONALD EFiled Dec 17, 2020
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← KO4DN KO4DP →

FCC data as of Sep 3, 2026

KO4DO FCC Vanity Status: 1 Competing Application & History