Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4WRK callsign genealogy
Currently held by Knight, William R
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W4WRK's current licensee, walking backwards.
- Knight, William RTNgranted 2020-09-16cancelled 2020-10-06
Successor callsigns
Callsigns held now by people who previously held W4WRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4WRK, oldest first.
- Norris III, Clarence E FL2006-08-23 → cancelled 2018-11-06
- Knight, William R TN2020-10-06 active