Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4NK callsign genealogy
Currently held by UNDERWOOD III, THEOPHILUS B
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 W4NK's current licensee, walking backwards.
- UNDERWOOD III, THEOPHILUS BGAgranted 2001-10-10cancelled 2003-01-07
Successor callsigns
Callsigns held now by people who previously held W4NK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4NK, oldest first.
- LEE SR, CLYDE B KY1994-05-24 → cancelled 2000-12-02
- UNDERWOOD III, THEOPHILUS B FL2022-11-08 active