Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4JOD callsign genealogy
Currently held by Mahaffey, William J
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 W4JOD's current licensee, walking backwards.
- MAHAFFEY, WILLIAM JNCgranted 2025-02-11cancelled 2025-03-08
Successor callsigns
Callsigns held now by people who previously held W4JOD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4JOD, oldest first.
- SPANFELLNER, JOSEPH E AL2006-03-07 → cancelled 2018-03-08
- Mahaffey, William J NC2025-03-08 active