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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

N9FXW callsign genealogy

Currently held by HUMMER, ROBERT A

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 N9FXW's current licensee, walking backwards.

  1. KC9CTUcancelled· G
    HUMMER, ROBERT AINgranted 2012-09-05cancelled 2018-01-17

Successor callsigns

Callsigns held now by people who previously held N9FXW.

  1. KR9BHcancelled· E
    HUMMER, WILLIAM DINgranted 2003-11-25cancelled 2004-01-31

All historical holders

Every license row we've seen with the callsign N9FXW, oldest first.

  • HUMMER, WILLIAM D IN
    1998-11-12 → cancelled 2003-11-25
  • HUMMER, ROBERT A IN
    2018-01-17 active
← Back to N9FXW License history →