Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4FUU callsign genealogy
Currently held by Rust, Carl W
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 W4FUU's current licensee, walking backwards.
- Rust, Carl WAZgranted 2022-02-15cancelled 2022-05-10
Successor callsigns
Callsigns held now by people who previously held W4FUU.
No current licensee on record previously held this callsign.