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/K4MFO

← Back to results

K4MFO

Active1x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderOlinger Jr, Milford F

License ClassTechnician

Min. Class RequiredGeneral

LocationAthens, AL

Grant DateNov 14, 2024

Expiration DateNov 14, 2034

K4MFO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Olinger Jr, Milford F in Athens, AL. 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 Olinger Jr, Milford F on Oct 21, 2004. K4MFO has 7 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 35 units(Moderate)

Voice Phonetics

Kilo Four Mike Foxtrot Oscar

Readability: 8.5/10(High readability)

License History

Administrative Update AppliedFeb 28, 2026
License RenewedNov 14, 2024
Administrative Update AppliedAug 6, 2020
Administrative Update AppliedDec 4, 2018
License RenewedApr 17, 2015
License IssuedNov 10, 2004
Vanity Callsign GrantedNov 10, 2004

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Olinger Jr, Milford FFiled Oct 21, 2004
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← K4MFN K4MFP →

FCC data as of Sep 3, 2026

K4MFO FCC Vanity Status: 1 Competing Application & History