Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD4JW callsign genealogy
Currently held by WALLS, JOHN S
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 AD4JW's current licensee, walking backwards.
- WALLS, JOHN SGAgranted 2014-02-24cancelled 2018-06-22
Successor callsigns
Callsigns held now by people who previously held AD4JW.
No current licensee on record previously held this callsign.