Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AF4FU callsign genealogy
Currently held by BENKEN, WILLIAM F
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 AF4FU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held AF4FU.
- BENKEN, WILLIAM FNCgranted 1997-12-03cancelled 2000-03-07