K4IWM
Available1x3District 4
Competitive callsign — 2 applications filed with the FCC.
License HolderO'Connor, Diane W
License ClassTechnician
Min. Class RequiredGeneral
LocationPinole, CA
Grant DateJun 12, 2012
Expiration DateJun 12, 2022
Cancellation DateJun 13, 2024
Available for ApplicationsJun 13, 2024
K4IWM is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by O'Connor, Diane W in Pinole, CA. 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 Muise, Ian W on Sep 4, 2026. K4IWM has 6 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- .. .-- --
CW Weight: 29 units(Light (fast to send))
Voice Phonetics
Kilo Four India Whiskey Mike
Readability: 8/10(High readability)
This callsign is available now
Requires General license or higher to apply for this callsign format (1x3).
License History
- License ExpiredJun 13, 2024
- License IssuedJun 12, 2012
- Vanity Callsign GrantedJun 12, 2012
- License ExpiredAug 27, 2009
- Tax ID (TIN) AddedMar 28, 2001
- Administrative Update AppliedMar 28, 2001
Vanity Application Activity
Competing applications filed with the FCC for this callsign.