Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4SMA callsign genealogy
Currently held by ASHTON JR, WILLIAM H
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 KD4SMA's current licensee, walking backwards.
- ANDERSON, SARAH MFLgranted 2012-03-19cancelled 2014-11-11
Successor callsigns
Callsigns held now by people who previously held KD4SMA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4SMA, oldest first.
- ASHTON JR, WILLIAM H NC1993-11-02 → cancelled 2005-11-03
- ANDERSON, SARAH M KY2025-04-23 active