Home/Search/KO4ZBX

KO4ZBX

Available2x3District 4

No competing applications on record.

License HolderBLACKWELL, ROBERT D

License ClassGeneral

Min. Class RequiredTechnician

LocationDripping Springs, TX

Grant DateMar 28, 2022

Expiration DateMar 28, 2032

Cancellation DateDec 2, 2022

CallsignFinder

Track FCC amateur radio vanity callsign availability. Data updated daily.

Legal & Info

Pricing FAQ Terms of Service Privacy Policy

FCC data sourced from FCC Universal Licensing System. Not affiliated with the FCC.

Watchlist Search Account

Home/Search/KO4ZBX

← Back to results

KO4ZBX

Available2x3District 4

No competing applications on record.

License HolderBLACKWELL, ROBERT D

License ClassGeneral

Min. Class RequiredTechnician

LocationDripping Springs, TX

Grant DateMar 28, 2022

Expiration DateMar 28, 2032

Cancellation DateDec 2, 2022

Available for ApplicationsDec 3, 2024

KO4ZBX is a 2x3 format amateur radio callsign. It is currently registered to BLACKWELL, ROBERT D in Dripping Springs, 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: 45 units(Heavy (slower to send))

Voice Phonetics

Kilo Oscar Four Zulu Bravo X-ray

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 CanceledDec 2, 2022
License ModifiedApr 22, 2022
System-Generated GrantMar 28, 2022
License IssuedMar 28, 2022

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

← KO4ZBW KO4ZBY →

FCC data as of Jul 10, 2026

Is KO4ZBX Available? FCC Vanity Status & Watchlist