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KJ4KXO

Available2x3District 4

No competing applications on record.

License HolderSpence, Matthew R

License ClassTechnician

Min. Class RequiredTechnician

LocationOak Ridge, TN

Grant DateApr 2, 2009

Expiration DateApr 2, 2019

Cancellation DateApr 3, 2021

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KJ4KXO

Available2x3District 4

No competing applications on record.

License HolderSpence, Matthew R

License ClassTechnician

Min. Class RequiredTechnician

LocationOak Ridge, TN

Grant DateApr 2, 2009

Expiration DateApr 2, 2019

Cancellation DateApr 3, 2021

Available for ApplicationsApr 3, 2021

KJ4KXO is a 2x3 format amateur radio callsign. It is currently registered to Spence, Matthew R in Oak Ridge, TN. 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: 48 units(Heavy (slower to send))

Voice Phonetics

Kilo Juliet Four Kilo X-ray Oscar

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 ExpiredApr 3, 2021
System-Generated GrantApr 2, 2009
License IssuedApr 2, 2009

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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← KJ4KXN KJ4KXP →

FCC data as of Sep 12, 2026

Is KJ4KXO Available? FCC Vanity Status & Watchlist