Confidence: Medium · Source: FCC ULS · As of 2026-09-09
WW4JRF
ActiveFrederick, Joseph R
- Location
- Port Saint Lucie, FL
- Class
- Amateur Extra
- Granted
- 2016-01-29
- Expires
- 2026-01-29
- Previous call
- KM4KFF
- FRN
- 0024566291
Sign in to watch
Get notified about status changes and vanity availability for this callsign.
Vanity availability
HeldCurrently held
WW4JRF 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
- Frederick, Joseph RFLgranted 2015-05-01cancelled 2016-01-29
License history
0 eventsNo recorded events.