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.