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

N9DB callsign genealogy

Currently held by DIZACK, 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 N9DB's current licensee, walking backwards.

  1. N9VGHcancelled· E
    DIZACK, ROBERT AWIgranted 2013-07-17cancelled 2021-07-12

Successor callsigns

Callsigns held now by people who previously held N9DB.

  1. W1PDcancelled· E
    Butler III, Harry GGAgranted 2019-06-21cancelled 2019-08-30

All historical holders

Every license row we've seen with the callsign N9DB, oldest first.

  • BREMIGAN, RICHARD O IN
    2006-09-21 → cancelled 2018-12-18
  • Butler III, Harry G GA
    2019-02-01 → cancelled 2019-06-21
  • DIZACK, ROBERT A WI
    2021-07-12 active
← Back to N9DB License history →