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

W5IOC callsign genealogy

Currently held by PREISLER, JAN

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 W5IOC's current licensee, walking backwards.

  1. AD5ELcancelled· E
    PREISLER, JANTXgranted 2012-01-19cancelled 2013-03-29
  2. KM5KCactive· E
    PREISLER, JANTXgranted 2020-05-01
  3. AG5XXactive· E
    HALL, DAVID STXgranted 2025-06-14
  4. KB7QHLcancelled· E
    HALL, DAVID STXgranted 2023-07-21cancelled 2025-06-14

Successor callsigns

Callsigns held now by people who previously held W5IOC.

  1. AG5XXcancelled· E
    PREISLER, JANTXgranted 2013-03-29cancelled 2020-05-01
← Back to W5IOC License history →