Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4OMX callsign genealogy
Currently held by Smith III, Clifford E
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 KD4OMX's current licensee, walking backwards.
- Smith III, Clifford EGAgranted 2023-08-22cancelled 2024-03-09
Successor callsigns
Callsigns held now by people who previously held KD4OMX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4OMX, oldest first.
- SULLIVAN, HUGH V AL1992-05-19 → cancelled 2004-05-20
- Smith III, Clifford E GA2024-03-09 active