K3CFI
Available1x3District 3
Competitive callsign — 3 applications filed with the FCC.
License HolderDonahue, Michael L
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationRockville, MD
Grant DateFeb 5, 2003
Expiration DateFeb 5, 2013
Cancellation DateMay 30, 2008
Available for ApplicationsMay 31, 2010
K3CFI is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Donahue, Michael L in Rockville, MD. This callsign has attracted significant interest in the amateur radio community, with 3 vanity applications filed with the FCC. The most recent was submitted by Brofman, Andrew on Jul 27, 2026. K3CFI has 5 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ...-- -.-. ..-. ..
CW Weight: 32 units(Moderate)
Voice Phonetics
Kilo Three Charlie Foxtrot India
Readability: 7.5/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (1x3).
License History
- License CanceledMay 30, 2008
- License ModifiedMar 19, 2007
- License ModifiedFeb 26, 2007
- License IssuedFeb 5, 2003
- Vanity Callsign GrantedFeb 5, 2003
Vanity Application Activity
Competing applications filed with the FCC for this callsign.