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Confidence: Medium · Source: FCC ULS · As of 2026-10-26

N9BG callsign genealogy

Currently held by Greenwood, William

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 N9BG's current licensee, walking backwards.

  1. AD9IHcancelled· E
    Greenwood, WilliamILgranted 2026-02-04cancelled 2026-10-06
  2. KE9ETFcancelled· E
    Greenwood, WilliamILgranted 2026-02-04cancelled 2026-02-20

Successor callsigns

Callsigns held now by people who previously held N9BG.

  1. N4JSactive· E
    SWOFFORD, JOHN WFLgranted 2024-09-17

All historical holders

Every license row we've seen with the callsign N9BG, oldest first.

  • SWOFFORD, JOHN W FL
    2018-03-06 → cancelled 2024-09-17
  • Greenwood, William IL
    2026-10-06 active
← Back to N9BG License history →