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KY4BS

Available2x2District 4

Competitive callsign — 6 applications filed with the FCC.

License HolderBRUES, CHARLES T

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationBoulder, CO

Grant DateJul 21, 2020

Expiration DateJul 21, 2030

Cancellation DateJan 29, 2021

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KY4BS

Available2x2District 4

Competitive callsign — 6 applications filed with the FCC.

License HolderBRUES, CHARLES T

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationBoulder, CO

Grant DateJul 21, 2020

Expiration DateJul 21, 2030

Cancellation DateJan 29, 2021

Available for ApplicationsJan 30, 2023

KY4BS is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by BRUES, CHARLES T in Boulder, CO. This callsign has attracted significant interest in the amateur radio community, with 6 vanity applications filed with the FCC. The most recent was submitted by Maddock, Timothy M on Dec 10, 2025. KY4BS has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 33 units(Moderate)

Voice Phonetics

Kilo Yankee Four Bravo Sierra

Readability: 7.5/10(High readability)

This callsign is available now

Requires General license or higher to apply for this callsign format (2x2).

License History

License CanceledJan 29, 2021
Administrative Update AppliedDec 22, 2020
Administrative Update AppliedDec 22, 2020
License IssuedOct 20, 2020
System-Generated GrantOct 20, 2020

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Maddock, Timothy MFiled Dec 10, 2025
DismissedFCC ↗
Stewart, Robert RFiled Mar 21, 2023
Not awardedFCC ↗
Speaks, Barry LFiled Dec 13, 2017
Not awardedFCC ↗
SMITH, WILLIAM TFiled May 1, 2009

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← KY4BR KY4BT →

FCC data as of Jul 29, 2026

Not awarded

FCC ↗

Bush, Charles LFiled Feb 20, 2007

Not awardedFCC ↗

Fayette Amateur Radio Transmitting SocietyFiled Feb 20, 2007

Not awardedFCC ↗

KY4BS FCC Vanity Status: 6 Competing Applications & History