Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4ZKX callsign genealogy
Currently held by Hamilton III, Richard 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 KC4ZKX's current licensee, walking backwards.
- Hamilton III, Richard CFLgranted 2023-07-04cancelled 2024-09-28
Successor callsigns
Callsigns held now by people who previously held KC4ZKX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4ZKX, oldest first.
- HAMILTON III, RICHARD C FL1991-10-29 → cancelled 2003-10-30
- Hamilton III, Richard C FL2024-09-28 active