K4RTO
Available1x3District 4
Competitive callsign — 6 applications filed with the FCC.
License HolderADAMS, BRITTANY N
License ClassTechnician
Min. Class RequiredGeneral
LocationCOLUMBIA, SC
Grant DateFeb 12, 2010
Expiration DateFeb 12, 2020
Cancellation DateFeb 15, 2022
Available for ApplicationsFeb 13, 2022
K4RTO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by ADAMS, BRITTANY N in COLUMBIA, SC. 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 Rampy, Zackery B on Jan 14, 2026. K4RTO has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .-. - ---
CW Weight: 31 units(Moderate)
Voice Phonetics
Kilo Four Romeo Tango Oscar
Readability: 7.5/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredFeb 15, 2022
- Administrative Update AppliedJun 2, 2015
- License IssuedFeb 12, 2010
- Vanity Callsign GrantedFeb 12, 2010
- License ExpiredFeb 6, 2008
Vanity Application Activity
Competing applications filed with the FCC for this callsign.