Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4ZWA callsign genealogy
Currently held by SMITH, DAVID W
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 KD4ZWA's current licensee, walking backwards.
- Smith, David WKYgranted 2017-06-19cancelled 2017-07-07
Successor callsigns
Callsigns held now by people who previously held KD4ZWA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4ZWA, oldest first.
- SMITH, DAVID W KY1993-04-06 → cancelled 2005-04-07
- smith, david W KY2017-07-07 active