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KN4SIO

Available2x3District 4

No competing applications on record.

License HolderHolt, Joel M

License ClassTechnician

Min. Class RequiredTechnician

LocationBirmingham, AL

Grant DateFeb 12, 2019

Expiration DateFeb 12, 2029

Cancellation DateMar 9, 2019

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KN4SIO

Available2x3District 4

No competing applications on record.

License HolderHolt, Joel M

License ClassTechnician

Min. Class RequiredTechnician

LocationBirmingham, AL

Grant DateFeb 12, 2019

Expiration DateFeb 12, 2029

Cancellation DateMar 9, 2019

Available for ApplicationsMar 10, 2021

KN4SIO is a 2x3 format amateur radio callsign. It is currently registered to Holt, Joel M 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: 32 units(Moderate)

Voice Phonetics

Kilo November Four Sierra India Oscar

Readability: 6/10(Good readability)

This callsign is available now

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

License History

License CanceledMar 9, 2019
System-Generated GrantFeb 12, 2019
License IssuedFeb 12, 2019

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 KN4SIO Available? FCC Vanity Status & Watchlist