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KC4YRZ

Available2x3District 4

No competing applications on record.

License HolderKALSEY SR, ROBERT C

License ClassGeneral

Min. Class RequiredTechnician

LocationREDWOOD CITY, CA

Grant DateAug 12, 2014

Expiration DateSep 8, 2024

Cancellation DateApr 27, 2021

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KC4YRZ

Available2x3District 4

No competing applications on record.

License HolderKALSEY SR, ROBERT C

License ClassGeneral

Min. Class RequiredTechnician

LocationREDWOOD CITY, CA

Grant DateAug 12, 2014

Expiration DateSep 8, 2024

Cancellation DateApr 27, 2021

Available for ApplicationsApr 28, 2023

KC4YRZ is a 2x3 format amateur radio callsign. It is currently registered to KALSEY SR, ROBERT C in REDWOOD CITY, CA. 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: 45 units(Heavy (slower to send))

Voice Phonetics

Kilo Charlie Four Yankee Romeo Zulu

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 CanceledApr 27, 2021
Administrative Update AppliedFeb 13, 2018
License RenewedAug 12, 2014
License RenewedSep 8, 2004

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 ↗

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← KC4YRY KC4YSB →

FCC data as of Sep 12, 2026

Is KC4YRZ Available? FCC Vanity Status & Watchlist