Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4ADZ callsign genealogy
Currently held by Addonizio, Robert
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 W4ADZ's current licensee, walking backwards.
- Addonizio, RobertDEgranted 2018-04-23cancelled 2018-05-11
Successor callsigns
Callsigns held now by people who previously held W4ADZ.
No current licensee on record previously held this callsign.