KM4MK
Active2x2District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderButera Jr, Robert J
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationEastham, MA
Grant DateFeb 26, 2025
Expiration DateMay 23, 2035
KM4MK is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Butera Jr, Robert J in Eastham, MA. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Butera Jr, Robert J on May 5, 2015. KM4MK has 13 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -- ....- -- -.-
CW Weight: 33 units(Moderate)
Voice Phonetics
Kilo Mike Four Mike Kilo
Readability: 9/10(Excellent readability)
License History
- Administrative Update AppliedSep 18, 2025
- Administrative Update AppliedAug 5, 2025
- License RenewedFeb 26, 2025
- Administrative Update AppliedJun 21, 2024
- Administrative Update AppliedAug 3, 2022
- Administrative Update AppliedMay 19, 2018
- Vanity Callsign GrantedMay 23, 2015
- License IssuedMay 23, 2015
- License CanceledApr 13, 2012
- FRN Association Letter SentMar 27, 2012
- Vanity Callsign GrantedFeb 29, 2008
Vanity Application Activity
Competing applications filed with the FCC for this callsign.