Confidence: Medium · Source: FCC ULS · As of 2026-09-09
K4LSU
ActiveKlimczak, Joseph C
- Location
- Creve Coeur, MO
- Class
- Amateur Extra
- Granted
- 2023-12-28
- Expires
- 2034-03-20
- Previous call
- AC0AI
- FRN
- 0010062024
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Vanity availability
HeldCurrently held
K4LSU is held by an active license; it isn't a vanity slot right now.
Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).
Callsign genealogy
Full chain →License history
0 eventsNo recorded events.