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KN4NJO

Available2x3District 4

No competing applications on record.

License HolderPlummer, Michael J

License ClassTechnician

Min. Class RequiredTechnician

LocationSpartanburg, SC

Grant DateJun 21, 2018

Expiration DateJun 21, 2028

Cancellation DateJul 17, 2018

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KN4NJO

Available2x3District 4

No competing applications on record.

License HolderPlummer, Michael J

License ClassTechnician

Min. Class RequiredTechnician

LocationSpartanburg, SC

Grant DateJun 21, 2018

Expiration DateJun 21, 2028

Cancellation DateJul 17, 2018

Available for ApplicationsJul 18, 2020

KN4NJO is a 2x3 format amateur radio callsign. It is currently registered to Plummer, Michael J in Spartanburg, SC. 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: 41 units(Heavy (slower to send))

Voice Phonetics

Kilo November Four November Juliet 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 CanceledJul 17, 2018
System-Generated GrantJun 21, 2018
License IssuedJun 21, 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 KN4NJO Available? FCC Vanity Status & Watchlist