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

AC8ZR callsign genealogy

Currently held by Sobiesiak, Gregory J

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 AC8ZR's current licensee, walking backwards.

  1. AD8AUcancelled· E
    Sobiesiak, Gregory JMIgranted 2017-09-29cancelled 2018-04-17
  2. AE8GSactive· E
    Schroeder, Eugene ROHgranted 2022-09-27
  3. AD8JHcancelled· E
    Schroeder, Eugene ROHgranted 2022-09-08cancelled 2022-09-27

Successor callsigns

Callsigns held now by people who previously held AC8ZR.

  1. W8NHactive· E
    Sobiesiak, Gregory JMIgranted 2019-03-22
  2. AE8GScancelled· E
    Sobiesiak, Gregory JMIgranted 2017-09-29cancelled 2018-03-21

All historical holders

Every license row we've seen with the callsign AC8ZR, oldest first.

  • Sobiesiak, Gregory J MI
    2017-06-22 → cancelled 2017-09-29
  • Sobiesiak, Gregory J MI
    2018-04-17 → cancelled 2019-03-22
← Back to AC8ZR License history →