Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4FSU callsign genealogy
Currently held by GONZALEZ, MICHAEL J
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 N4FSU's current licensee, walking backwards.
- DONNELLY, JAMES RFLgranted 2007-07-12cancelled 2008-01-26
Successor callsigns
Callsigns held now by people who previously held N4FSU.
- GONZALEZ, MICHAEL JFLgranted 2006-01-07cancelled 2007-05-18
All historical holders
Every license row we've seen with the callsign N4FSU, oldest first.
- BERGOSH, STANLEY J TN1987-10-06 → cancelled 1999-10-07
- GONZALEZ, MICHAEL J FL2000-01-07 → cancelled 2006-01-07
- DONNELLY, JAMES R FL2017-11-02 active