KZ4FS
Cancelled2x2District 4
Competitive callsign — 1 application filed with the FCC.
License HolderHall, Rex M
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationFleming Island, FL
Grant DateApr 4, 2024
Cancellation DateOct 16, 2024
Available for ApplicationsOct 17, 2026
KZ4FS is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Hall, Rex M in Fleming Island, 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 Reeder, Robert S on Jun 9, 2023. KZ4FS has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- --.. ....- ..-. ...
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Zulu Four Foxtrot Sierra
Readability: 7.5/10(High readability)
Available Oct 17, 2026 (79 days remaining)
Requires General license or higher to apply for this callsign format (2x2).
License History
- License CanceledOct 16, 2024
- System-Generated GrantApr 4, 2024
- License IssuedApr 4, 2024
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Reeder, Robert SFiled Jun 9, 2023Not awardedFCC ↗