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

WA7GBT callsign genealogy

Currently held by WHITCOMB, DONALD L

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 WA7GBT's current licensee, walking backwards.

  1. KC0BTMcancelled· G
    Thomson, Grace BWAgranted 2017-05-09cancelled 2022-09-20
  2. N3EMTactive· E
    VANBLARGAN, JOSEPH WPAgranted 2025-06-10
  3. KC3DUAcancelled· G
    VANBLARGAN, JOSEPH WPAgranted 2024-09-10cancelled 2025-06-10

Successor callsigns

Callsigns held now by people who previously held WA7GBT.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign WA7GBT, oldest first.

  • WHITCOMB, DONALD L AZ
    1996-03-21 → cancelled 1999-12-23
  • Thomson, Grace B WA
    2022-09-20 active
← Back to WA7GBT License history →