KR4AUB
Active2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderCaudill, Mackenzie
License ClassTechnician
Min. Class RequiredTechnician
LocationSanford, NC
Grant DateJan 23, 2025
Expiration DateJan 23, 2035
KR4AUB is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Caudill, Mackenzie in Sanford, NC. 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 Morris, Thomas A on Jan 2, 2026. KR4AUB has 2 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .-. ....- .- ..- -...
CW Weight: 34 units(Moderate)
Voice Phonetics
Kilo Romeo Four Alpha Uniform Bravo
Readability: 6.5/10(Good readability)
License History
- System-Generated GrantJan 23, 2025
- License IssuedJan 23, 2025
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Morris, Thomas AFiled Jan 2, 2026DismissedFCC ↗