Confidence: Medium · Source: FCC ULS · As of 2026-09-09
K4ZSW
ActiveMcDow Jr, Alvis E
- Location
- Gainesville, FL
- Class
- Amateur Extra
- Granted
- 2018-09-01
- Expires
- 2028-09-01
- Previous call
- KN4OJL
- FRN
- 0027748151
Sign in to watch
Get notified about status changes and vanity availability for this callsign.
Vanity availability
HeldCurrently held
K4ZSW 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
- McDow Jr, Alvis EFLgranted 2018-08-13cancelled 2018-09-01
License history
0 eventsNo recorded events.