K4SMO
Available1x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderOi, Stephen M
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationBrentwood, TN
Grant DateJan 7, 1999
Expiration DateJan 7, 2009
Cancellation DateAug 31, 2001
Available for ApplicationsSep 1, 2003
K4SMO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Oi, Stephen M in Brentwood, TN. 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 Smolinski, Owen M on Oct 21, 2026. K4SMO has 4 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- ....- ... -- ---
CW Weight: 32 units(Moderate)
Voice Phonetics
Kilo Four Sierra Mike Oscar
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 CanceledAug 31, 2001
- License ModifiedAug 3, 2001
- Administrative Update AppliedMay 31, 2000
- License ModifiedSep 23, 1999
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Smolinski, Owen MFiled Oct 21, 2026PendingFCC ↗