KM4VOL
Active2x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderMacomber, Marlene K
License ClassTechnician
Min. Class RequiredTechnician
LocationShingletown, CA
Grant DateMay 19, 2026
Expiration DateJul 25, 2036
KM4VOL is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Macomber, Marlene K in Shingletown, CA. 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 Lonas, Michael S on Jun 2, 2015. KM4VOL has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -- ....- ...- --- .-..
CW Weight: 41 units(Heavy (slower to send))
Voice Phonetics
Kilo Mike Four Victor Oscar Lima
Readability: 8/10(High readability)
License History
- License RenewedMay 19, 2026
- Administrative Update AppliedSep 7, 2023
- System-Generated GrantJul 25, 2016
- License IssuedJul 25, 2016
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Lonas, Michael SFiled Jun 2, 2015Not awardedFCC ↗