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

W9DWT callsign genealogy

Currently held by Terry, Gailyn 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 W9DWT's current licensee, walking backwards.

  1. WD9DWTcancelled· G
    Sheean, David AINgranted 2021-01-15cancelled 2024-05-11
  2. KA9KNIcancelled· G
    Sheean, David AINgranted 2020-08-04cancelled 2021-01-15
  3. KD9PURcancelled· G
    Sheean, David AINgranted 2020-07-13cancelled 2020-08-04

Successor callsigns

Callsigns held now by people who previously held W9DWT.

  1. AD7GTactive· E
    Terry, Gailyn DWAgranted 2020-07-07
  2. W8RSJactive· E
    ST JOHN, ROBERT WMIgranted 2017-08-04

All historical holders

Every license row we've seen with the callsign W9DWT, oldest first.

  • Terry, Gailyn D WA
    2020-03-10 → cancelled 2020-07-07
  • Sheean, David A IN
    2024-05-11 active
  • ST JOHN, ROBERT W
    — → cancelled 1997-10-30
← Back to W9DWT License history →