Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4SDW callsign genealogy
Currently held by Whitmire, Steven 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 KX4SDW's current licensee, walking backwards.
- WHITMIRE, STEVEN DSCgranted 2019-02-25cancelled 2019-03-22
Successor callsigns
Callsigns held now by people who previously held KX4SDW.
- Whitmire, Steven DSCgranted 2019-03-22