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KF4YOS

Available2x3District 4

No competing applications on record.

License HolderTOMLINSON, JAMES D

License ClassTechnician

Min. Class RequiredTechnician

LocationSAINT PETERSBURG, FL

Grant DateMay 20, 1998

Expiration DateMay 20, 2008

Cancellation DateMay 21, 2010

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KF4YOS

Available2x3District 4

No competing applications on record.

License HolderTOMLINSON, JAMES D

License ClassTechnician

Min. Class RequiredTechnician

LocationSAINT PETERSBURG, FL

Grant DateMay 20, 1998

Expiration DateMay 20, 2008

Cancellation DateMay 21, 2010

Available for ApplicationsMay 21, 2010

KF4YOS is a 2x3 format amateur radio callsign. It is currently registered to TOMLINSON, JAMES D in SAINT PETERSBURG, FL. 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: 42 units(Heavy (slower to send))

Voice Phonetics

Kilo Foxtrot Four Yankee Oscar Sierra

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 ExpiredMay 21, 2010

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 Jul 31, 2026

Is KF4YOS Available? FCC Vanity Status & Watchlist