KO4XR
Available2x2District 4
Competitive callsign — 1 application filed with the FCC.
License HolderDERWART, DAN L
License ClassGeneral
Min. Class RequiredGeneral
LocationWINTER PARK, FL
Grant DateNov 23, 2013
Expiration DateMar 5, 2024
Cancellation DateMar 6, 2026
Available for ApplicationsMar 6, 2026
KO4XR is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by DERWART, DAN L in WINTER PARK, 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 Dunn, Kerry O on Feb 20, 2018. KO4XR has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- --- ....- -..- .-.
CW Weight: 36 units(Moderate)
Voice Phonetics
Kilo Oscar Four X-ray Romeo
Readability: 7.5/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (2x2).
License History
- License ExpiredMar 6, 2026
- License RenewedNov 23, 2013
- License RenewedOct 11, 2003
- Administrative Update AppliedJun 18, 2001
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Dunn, Kerry OFiled Feb 20, 2018DismissedFCC ↗