KR4FX
Available2x2District 4
Competitive callsign — 1 application filed with the FCC.
License HolderGRABOWSKI, MARY JANE
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationWAUSAU, WI
Grant DateJul 17, 2013
Expiration DateMar 5, 2024
Cancellation DateMar 6, 2026
Available for ApplicationsMar 6, 2026
KR4FX is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by GRABOWSKI, MARY JANE in WAUSAU, WI. 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 Stines, David R on Mar 4, 2026. KR4FX has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- .-. ....- ..-. -..-
CW Weight: 33 units(Moderate)
Voice Phonetics
Kilo Romeo Four Foxtrot X-ray
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 RenewedJul 17, 2013
- Tax ID (TIN) AddedJul 17, 2003
- License RenewedJul 17, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Stines, David RFiled Mar 4, 2026DismissedFCC ↗