uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

N9FSU callsign genealogy

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 N9FSU's current licensee, walking backwards.

  1. N4FSUactive· G
    DONNELLY, JAMES RFLgranted 2017-11-02
  2. KI4YAWcancelled· G
    DONNELLY, JAMES RFLgranted 2007-07-12cancelled 2008-01-26

Successor callsigns

Callsigns held now by people who previously held N9FSU.

  1. KC0BXVactive· G
    RICE, RANSOM PTNgranted 2021-02-01
  2. N2FSUactive· A
    GONZALEZ, MICHAEL JFLgranted 2017-02-22

All historical holders

Every license row we've seen with the callsign N9FSU, oldest first.

  • GONZALEZ, MICHAEL J FL
    2006-01-07 → cancelled 2007-05-18
  • —
    — → cancelled 1997-09-08
← Back to N9FSU License history →