Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4ITU callsign genealogy
Currently held by STOCKDALE, WALLER 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 WD4ITU's current licensee, walking backwards.
- Stockdale, Patrick HTNgranted 2016-02-09cancelled 2018-12-14
Successor callsigns
Callsigns held now by people who previously held WD4ITU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD4ITU, oldest first.
- STOCKDALE, WALLER R TN1994-03-22 → cancelled 2006-03-23
- Stockdale, Patrick H TN2018-12-14 active