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

AB9GF callsign genealogy

Currently held by HOLTZMAN, DOUG M

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 AB9GF's current licensee, walking backwards.

  1. N9XFactive· E
    SKYBA, ROMANILgranted 2017-08-11
  2. W9AATactive· G
    Cahill, Tom MILgranted 2024-06-21
  3. KD9VNLcancelled· G
    Cahill, Tom MILgranted 2022-07-19cancelled 2024-06-21

Successor callsigns

Callsigns held now by people who previously held AB9GF.

  1. AD9Iexpired· E
    HOLTZMAN, DOUG MWIgranted 2004-04-28cancelled 2016-04-29
  2. N9XFcancelled· E
    Holtzman, Doug MWIgranted 2002-06-25cancelled 2003-01-24

All historical holders

Every license row we've seen with the callsign AB9GF, oldest first.

  • Holtzman, Doug M WI
    2000-09-12 → cancelled 2002-06-25
  • HOLTZMAN, DOUG M WI
    2003-01-24 → cancelled 2004-04-28
← Back to AB9GF License history →