Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD2FU callsign genealogy
Currently held by Clark, William M
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 AD2FU's current licensee, walking backwards.
- Clark, William MNYgranted 2021-06-01cancelled 2023-06-29
Successor callsigns
Callsigns held now by people who previously held AD2FU.
No current licensee on record previously held this callsign.