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KN4MZU

Available2x3District 4

No competing applications on record.

License HolderRenfro Jr, William C

License ClassTechnician

Min. Class RequiredTechnician

LocationBirmingham, AL

Grant DateJun 12, 2018

Expiration DateJun 12, 2028

Cancellation DateJul 3, 2018

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KN4MZU

Available2x3District 4

No competing applications on record.

License HolderRenfro Jr, William C

License ClassTechnician

Min. Class RequiredTechnician

LocationBirmingham, AL

Grant DateJun 12, 2018

Expiration DateJun 12, 2028

Cancellation DateJul 3, 2018

Available for ApplicationsJul 4, 2020

KN4MZU is a 2x3 format amateur radio callsign. It is currently registered to Renfro Jr, William C in Birmingham, AL. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.

CW & Voice Analysis

Morse Code

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

CW Weight: 37 units(Moderate)

Voice Phonetics

Kilo November Four Mike Zulu Uniform

Readability: 7/10(Good readability)

This callsign is available now

Requires Technician license or higher to apply for this callsign format (2x3).

License History

License CanceledJul 3, 2018
System-Generated GrantJun 12, 2018
License IssuedJun 12, 2018

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

No competing applications on record. Verify on the FCC ULS application search before filing.

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FCC data as of Sep 12, 2026

Is KN4MZU Available? FCC Vanity Status & Watchlist