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

W6AH callsign genealogy

Currently held by MARSTON, ROBERT T

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 W6AH's current licensee, walking backwards.

  1. KM6PVTcancelled· E
    MATTIA, CHRISTOPHER SCAgranted 2018-01-31cancelled 2018-10-05

Successor callsigns

Callsigns held now by people who previously held W6AH.

  1. K6TRcancelled· E
    MARSTON, ROBERT TCAgranted 2017-05-02cancelled 2020-07-03
  2. NS1TAactive· E
    PLAZIAK, MICHAEL RCAgranted 2016-09-16
  3. W6TNcancelled· E
    NGUYEN, TRUNG QCAgranted 2002-05-31cancelled 2011-08-16
  4. K3HHcancelled· E
    NGUYEN, TRUNG QCAgranted 2002-04-10cancelled 2002-05-07

All historical holders

Every license row we've seen with the callsign W6AH, oldest first.

  • BLACK, LAWRENCE E CA
    1984-12-11 → cancelled 1998-01-27
  • BLACK, LAWRENCE E AZ
    1997-02-11 → cancelled 1998-01-27
  • NGUYEN, TRUNG Q CA
    2000-02-19 → cancelled 2002-04-10
  • NGUYEN, TRUNG Q CA
    2002-05-07 → cancelled 2002-05-31
  • MARSTON, ROBERT T CA
    2004-06-19 → cancelled 2007-07-21
  • PLAZIAK, MICHAEL R ME
    2009-08-11 → cancelled 2016-09-16
  • MATTIA, CHRISTOPHER S CA
    2018-10-05 active
← Back to W6AH License history →