N4SMO
Active1x3District 4
Competitive callsign — 1 application filed with the FCC.
License HolderLAMPERT, MARK J
License ClassAmateur Extra
Min. Class RequiredGeneral
LocationBOCA RATON, FL
Grant DateJun 20, 2019
Expiration DateJun 20, 2029
N4SMO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by LAMPERT, MARK J in BOCA RATON, FL. 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. N4SMO has 3 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-. ....- ... -- ---
CW Weight: 29 units(Light (fast to send))
Voice Phonetics
November Four Sierra Mike Oscar
Readability: 7.5/10(High readability)
License History
- License RenewedJun 20, 2019
- License RenewedMar 17, 2009
- License ModifiedJun 8, 2000
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Smolinski, Owen MFiled Oct 21, 2026PendingFCC ↗