Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4OOK callsign genealogy
Currently held by Durdin, Douglas F
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 W4OOK's current licensee, walking backwards.
- Durdin, Douglas FGAgranted 2023-03-15cancelled 2023-05-12
Successor callsigns
Callsigns held now by people who previously held W4OOK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4OOK, oldest first.
- MERSHIMER, GEORGE W AL1988-03-01 → cancelled 2000-03-02
- Durdin, Douglas F GA2023-05-12 active