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KC4URI

Available2x3District 4

No competing applications on record.

License HolderClabo, William R

License ClassAmateur Extra

Min. Class RequiredTechnician

LocationSan Antonio, TX

Grant DateAug 14, 2013

Expiration DateMar 5, 2024

Cancellation DateMay 7, 2026

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KC4URI

Available2x3District 4

No competing applications on record.

License HolderClabo, William R

License ClassAmateur Extra

Min. Class RequiredTechnician

LocationSan Antonio, TX

Grant DateAug 14, 2013

Expiration DateMar 5, 2024

Cancellation DateMay 7, 2026

Available for ApplicationsMar 6, 2026

KC4URI is a 2x3 format amateur radio callsign. It is currently registered to Clabo, William R in San Antonio, TX. 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: 34 units(Moderate)

Voice Phonetics

Kilo Charlie Four Uniform Romeo India

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 ExpiredMay 7, 2026
License RenewedAug 14, 2013
License RenewedAug 12, 2003
Administrative Update AppliedMar 27, 2003

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

QRZ ↗HamQTH ↗

Explore nearby callsigns

← KC4URH KC4URJ →

FCC data as of Jul 29, 2026

Is KC4URI Available? FCC Vanity Status & Watchlist