Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3FU callsign genealogy
Currently held by FERGUSON, WILLIAM C
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 N3FU's current licensee, walking backwards.
- ECKARDT, JOHN CFLgranted 1997-03-21cancelled 2001-03-20
Successor callsigns
Callsigns held now by people who previously held N3FU.
- FERGUSON, WILLIAM CCAgranted 2018-12-06
All historical holders
Every license row we've seen with the callsign N3FU, oldest first.
- ECKARDT, JOHN C FL2020-12-31 active
- FERGUSON, WILLIAM C— → cancelled 1999-02-26