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KO4TTO

Available2x3District 4

No competing applications on record.

License HolderHatfield, Mary C

License ClassTechnician

Min. Class RequiredTechnician

LocationFairfax, VA

Grant DateOct 4, 2021

Expiration DateOct 4, 2031

Cancellation DateApr 30, 2022

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KO4TTO

Available2x3District 4

No competing applications on record.

License HolderHatfield, Mary C

License ClassTechnician

Min. Class RequiredTechnician

LocationFairfax, VA

Grant DateOct 4, 2021

Expiration DateOct 4, 2031

Cancellation DateApr 30, 2022

Available for ApplicationsMay 1, 2024

KO4TTO is a 2x3 format amateur radio callsign. It is currently registered to Hatfield, Mary C in Fairfax, VA. 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: 38 units(Moderate)

Voice Phonetics

Kilo Oscar Four Tango Tango Oscar

Readability: 7.5/10(High readability)

This callsign is available now

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

License History

License CanceledApr 30, 2022
Administrative Update AppliedApr 13, 2022
System-Generated GrantOct 4, 2021
License IssuedOct 4, 2021

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.

Search external databases

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← KO4TTN KO4TTP →

FCC data as of Jul 10, 2026

Is KO4TTO Available? FCC Vanity Status & Watchlist