K0LLO
Active1x3District 0
Competitive callsign — 2 applications filed with the FCC.
License HolderWARTBURG, RONALD J
License ClassGeneral
Min. Class RequiredGeneral
LocationARLINGTON, TX
Grant DateFeb 27, 2026
Expiration DateApr 15, 2036
K0LLO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by WARTBURG, RONALD J in ARLINGTON, TX. 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 Yount, Curtis W on Mar 16, 2020. K0LLO has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ----- .-.. .-.. ---
CW Weight: 43 units(Heavy (slower to send))
Voice Phonetics
Kilo Zero Lima Lima Oscar
Readability: 7.5/10(High readability)
License History
- Administrative Update AppliedMar 2, 2026
- License RenewedFeb 27, 2026
- License ModifiedNov 9, 2016
- License IssuedApr 15, 2016
- Vanity Callsign GrantedApr 15, 2016
- Internal Correction AppliedMar 25, 2016
- Internal Correction AppliedMar 25, 2016
- Tax ID (TIN) AddedJan 30, 2006
- License RenewedJan 30, 2006
Vanity Application Activity
Competing applications filed with the FCC for this callsign.