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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

N1SU callsign genealogy

Currently held by Burns, Geoffrey D

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 N1SU's current licensee, walking backwards.

  1. W0JSBactive· G
    BRABY, JOEL STXgranted 2020-09-01
  2. KI5GMFcancelled· G
    BRABY, JOEL STXgranted 2019-09-19cancelled 2020-09-01

Successor callsigns

Callsigns held now by people who previously held N1SU.

  1. AA3WZcancelled· E
    Burns, Geoffrey DMDgranted 2009-02-27cancelled 2011-12-03

All historical holders

Every license row we've seen with the callsign N1SU, oldest first.

  • Burns, Geoffrey D MD
    1999-05-21 → cancelled 2001-05-29
  • Buchanan, Jason S WA
    2023-11-14 active
← Back to N1SU License history →