Confidence: Medium · Source: FCC ULS · As of 2026-09-10
W4ZDU
ExpiredKING, RALPH D
- Location
- SPRINGFIELD, TN
- Class
- Technician Plus
- Granted
- 1996-05-22
- Expires
- 2006-05-22
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Vanity availability
UnknownStatus unknown
No vanity-slot record on file for W4ZDU. Either it has never been issued, is currently held by an active license, or hasn't been re-computed since its last freeing event.
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.