Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD8AZ callsign genealogy
Currently held by SLACK, WILLIAM P
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 AD8AZ's current licensee, walking backwards.
- SLACK, WILLIAM PMIgranted 2018-02-12cancelled 2018-04-16
Successor callsigns
Callsigns held now by people who previously held AD8AZ.
No current licensee on record previously held this callsign.