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

AC5OW callsign genealogy

Currently held by THOMASON, PAT F

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 AC5OW's current licensee, walking backwards.

  1. AD5CJcancelled· E
    THOMASON, PAT FOKgranted 1997-10-08cancelled 2001-03-10
  2. KC5UOLcancelled· E
    THOMASON, PAT FOKgranted 1997-10-08cancelled 2001-02-08

Successor callsigns

Callsigns held now by people who previously held AC5OW.

  1. W5WCSactive· E
    Springfield, William CMSgranted 2017-12-29

All historical holders

Every license row we've seen with the callsign AC5OW, oldest first.

  • THOMASON, PAT F OK
    2001-03-10 → cancelled 2013-03-12
  • SPRINGFIELD, WILLIAM C
    — → cancelled 1998-03-24
← Back to AC5OW License history →