Confidence: Medium · Source: FCC ULS · As of 2026-09-09
KO4SB
ActiveHERRING, CHARLES E
- Location
- Wetumpka, AL
- Class
- Amateur Extra
- Granted
- 2023-02-09
- Expires
- 2033-04-27
- Previous call
- KC4YSZ
- FRN
- 0005857776
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Vanity availability
HeldCurrently held
KO4SB 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 →Previously held by current licensee
- KC4YSZno FCC ULS record on file
License history
0 eventsNo recorded events.