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

W7EMT callsign genealogy

Currently held by GRISHAM, MARK J

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 W7EMT's current licensee, walking backwards.

  1. KB7EMTcancelled· T
    WALKER, THOMAS FWAgranted 2011-05-10cancelled 2012-07-27
  2. KB7URFcancelled· T
    WALKER, THOMAS FWAgranted 2003-04-02cancelled 2011-05-10

Successor callsigns

Callsigns held now by people who previously held W7EMT.

  1. W7MJGcancelled· G
    GRISHAM, MARK JIDgranted 2010-06-12cancelled 2017-07-07

All historical holders

Every license row we've seen with the callsign W7EMT, oldest first.

  • GRISHAM, MARK J ID
    2010-04-15 → cancelled 2010-06-12
  • WALKER, THOMAS F WA
    2022-07-14 active
← Back to W7EMT License history →