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

W4GAT callsign genealogy

Currently held by UNDERWOOD, DAVID 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 W4GAT's current licensee, walking backwards.

  1. W1GATcancelled· E
    UNDERWOOD, DAVID DTNgranted 2010-11-16cancelled 2012-10-27
  2. KO4Nactive· E
    SPRINGTHORPE, DWIGHTPAgranted 2022-10-15
  3. KK4LYJcancelled· E
    SPRINGTHORPE, DWIGHTNCgranted 2012-10-09cancelled 2012-12-07

Successor callsigns

Callsigns held now by people who previously held W4GAT.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W4GAT, oldest first.

  • SADLER, JAMES E TN
    1997-07-16 → cancelled 2009-07-17
  • UNDERWOOD, DAVID D TN
    2022-08-23 active
← Back to W4GAT License history →