Confidence: Medium · Source: FCC ULS · As of 2026-09-10
W4LKO
ActiveSinclair, Jeff M
- Location
- Huntsville, AL
- Class
- General
- Granted
- 2016-09-13
- Expires
- 2026-09-13
- Previous call
- KJ4YIO
- FRN
- 0020199113
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Vanity availability
HeldCurrently held
W4LKO 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
- Sinclair, Jeff MALgranted 2010-09-14cancelled 2016-09-13
License history
0 eventsNo recorded events.