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WB4JKB

Available2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderMAYER SR, JOHN F

License ClassTechnician

Min. Class RequiredTechnician

LocationSAN ANTONIO, TX

Grant DateApr 2, 2013

Expiration DateJun 8, 2023

Cancellation DateJun 10, 2025

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WB4JKB

Available2x3District 4

Competitive callsign — 1 application filed with the FCC.

License HolderMAYER SR, JOHN F

License ClassTechnician

Min. Class RequiredTechnician

LocationSAN ANTONIO, TX

Grant DateApr 2, 2013

Expiration DateJun 8, 2023

Cancellation DateJun 10, 2025

Available for ApplicationsJun 9, 2025

WB4JKB is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by MAYER SR, JOHN F in SAN ANTONIO, TX. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Balassa, Julie K on Nov 22, 2017. WB4JKB has 4 recorded FCC license history events.

CW & Voice Analysis

Morse Code

.-- -... ....- .--- -.- -...

CW Weight: 43 units(Heavy (slower to send))

Voice Phonetics

Whiskey Bravo Four Juliet Kilo Bravo

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 ExpiredJun 10, 2025
License RenewedApr 2, 2013
Tax ID (TIN) AddedMay 9, 2003
License RenewedMay 9, 2003

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Balassa, Julie KFiled Nov 22, 2017
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← WB4JKA WB4JKD →

FCC data as of Sep 4, 2026

WB4JKB FCC Vanity Status: 1 Competing Application & History