Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4QDU callsign genealogy
Currently held by HENDERSON, GEORGE W
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 K4QDU's current licensee, walking backwards.
- HENDERSON JR, WALTER MGAgranted 2012-05-19cancelled 2019-12-31
- KC4LVJno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K4QDU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4QDU, oldest first.
- HENDERSON, GEORGE W SC1987-12-01 → cancelled 1999-12-02
- HENDERSON JR, WALTER M SC2019-12-31 active