KB4RTO
Active2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderNorona, Robert M
License ClassTechnician
Min. Class RequiredTechnician
LocationMIAMI, FL
Grant DateDec 12, 2025
Expiration DateDec 12, 2035
KB4RTO is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Norona, Robert M in MIAMI, FL. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Norona, Robert M on Nov 24, 2025. KB4RTO has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -... ....- .-. - ---
CW Weight: 37 units(Moderate)
Voice Phonetics
Kilo Bravo Four Romeo Tango Oscar
Readability: 7/10(Good readability)
License History
- License IssuedDec 12, 2025
- Vanity Callsign GrantedDec 12, 2025
- License ExpiredApr 30, 2008
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Norona, Robert MFiled Nov 24, 2025Not awardedFCC ↗