K0LEF
Active1x3District 0
Competitive callsign — 1 application filed with the FCC.
License HolderCawthra, Douglas J
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationColorado Springs, CO
Grant DateDec 11, 2025
Expiration DateOct 23, 2035
K0LEF is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Cawthra, Douglas J in Colorado Springs, CO. 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 Cawthra, Douglas J on Oct 5, 2015. K0LEF has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ----- .-.. . ..-.
CW Weight: 35 units(Moderate)
Voice Phonetics
Kilo Zero Lima Echo Foxtrot
Readability: 7.5/10(High readability)
License History
- License RenewedDec 11, 2025
- License ModifiedNov 13, 2017
- License IssuedOct 23, 2015
- Vanity Callsign GrantedOct 23, 2015
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Cawthra, Douglas JFiled Oct 5, 2015Not awardedFCC ↗