Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4AC callsign genealogy
Currently held by MARTONE, RICHARD J
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 KM4AC's current licensee, walking backwards.
- Morgan, Ronald LFLgranted 2015-02-26cancelled 2019-06-25
Successor callsigns
Callsigns held now by people who previously held KM4AC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KM4AC, oldest first.
- MARTONE, RICHARD J FL1992-12-29 → cancelled 2004-12-30
- Morgan, Ronald L FL2019-06-25 active