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KF4FK

Active2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderKEISLING III, FRED C

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationYULEE, FL

Grant DateFeb 5, 2021

Expiration DateApr 30, 2031

KF4FK is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by KEISLING III, FRED C in YULEE, FL. 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 KEISLING III, FREDERICK C on Apr 12, 2011. KF4FK has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 33 units(Moderate)

Voice Phonetics

Kilo Foxtrot Four Foxtrot Kilo

Readability: 8/10(High readability)

License History

License RenewedFeb 5, 2021
Administrative Update AppliedJul 18, 2015
License IssuedApr 30, 2011
Vanity Callsign GrantedApr 30, 2011
License ExpiredSep 23, 1999

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

KEISLING III, FREDERICK CFiled Apr 12, 2011
Not awardedFCC ↗

Search external databases

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← KF4FG KF4FL →

FCC data as of Sep 3, 2026

KF4FK FCC Vanity Status: 1 Competing Application & History