Confidence: Medium · Source: FCC ULS · As of 2026-09-10
N4ZUL
ActiveMADLEY, JOHN O
- Location
- WINTER HAVEN, FL
- Class
- Amateur Extra
- Granted
- 2024-11-19
- Expires
- 2034-11-19
- Previous call
- KD4ZUL
- FRN
- 0002906238
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Vanity availability
HeldCurrently held
N4ZUL 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
- MADLEY, JOHN OFLgranted 2013-01-16cancelled 2014-11-11
License history
0 eventsNo recorded events.