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

AD6S callsign genealogy

Currently held by HARDIN, J D

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 AD6S's current licensee, walking backwards.

  1. KD7FAMcancelled· E
    Colon, MichaelWAgranted 2015-01-09cancelled 2016-04-01
  2. KG7PWOcancelled· T
    Colon, MichaelWAgranted 2014-12-22cancelled 2015-01-09

Successor callsigns

Callsigns held now by people who previously held AD6S.

  1. K6AYcancelled· E
    Johansen, Bruce DCAgranted 2002-03-26cancelled 2004-03-06

All historical holders

Every license row we've seen with the callsign AD6S, oldest first.

  • HARDIN, J D CA
    1988-05-17 → cancelled 2000-05-18
  • Johansen, Bruce D CA
    2000-10-03 → cancelled 2002-03-26
  • Johansen, Bruce D CA
    2004-03-06 → cancelled 2014-02-28
  • LARSEN, MATHEW S TX
    2016-03-19 → cancelled 2016-03-31
  • Colon, Michael WA
    2016-04-01 active
← Back to AD6S License history →