uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K5GDW callsign genealogy

Currently held by Lyon, Mark C

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 K5GDW's current licensee, walking backwards.

  1. KE5YXLcancelled· E
    Walker, Gregory DTXgranted 2018-11-02cancelled 2019-02-12

Successor callsigns

Callsigns held now by people who previously held K5GDW.

  1. W5BOAactive· E
    WITTMANN, G DALEOKgranted 2017-09-05
  2. W4HGBactive· E
    Lyon, Mark CTXgranted 2016-12-24

All historical holders

Every license row we've seen with the callsign K5GDW, oldest first.

  • WITTMANN, G DALE OK
    1999-05-21 → cancelled 2007-11-20
  • Lyon, Mark C TX
    2016-08-16 → cancelled 2016-12-24
  • Walker, Gregory D TX
    2019-02-12 active
← Back to K5GDW License history →