KR4SR
Active2x2District 4
Competitive callsign — 4 applications filed with the FCC.
License HolderKillian Sr, Robert A
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationCharlotte, NC
Grant DateSep 29, 2026
Expiration DateSep 29, 2036
KR4SR is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by Killian Sr, Robert A in Charlotte, NC. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by Killian Sr, Robert A on Sep 10, 2026. KR4SR has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .-. ....- ... .-.
CW Weight: 27 units(Light (fast to send))
Voice Phonetics
Kilo Romeo Four Sierra Romeo
Readability: 6.5/10(Good readability)
License History
- License IssuedSep 29, 2026
- Vanity Callsign GrantedSep 29, 2026
- License ExpiredJun 1, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.