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

AB0MS callsign genealogy

Currently held by SWIECH, MIKE

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 AB0MS's current licensee, walking backwards.

  1. W0DOKcancelled· E
    SWIECH, MIKE ACOgranted 2016-06-01cancelled 2022-05-21
  2. KE0HCRcancelled· G
    Swiech, MikeCOgranted 2016-01-06cancelled 2016-06-01

Successor callsigns

Callsigns held now by people who previously held AB0MS.

  1. N0NJcancelled· E
    Hoffman, Nancy JMOgranted 2010-05-07cancelled 2018-09-06

All historical holders

Every license row we've seen with the callsign AB0MS, oldest first.

  • Hoffman, Nancy J MO
    1997-10-08 → cancelled 2000-06-30
  • SWIECH, MIKE CO
    2022-05-21 active
← Back to AB0MS License history →