Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4MAC callsign genealogy
Currently held by JARAMILLO, JOHN M
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 KD4MAC's current licensee, walking backwards.
- MCCULLOCH, CHRIS JVAgranted 2015-02-17cancelled 2015-03-10
Successor callsigns
Callsigns held now by people who previously held KD4MAC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4MAC, oldest first.
- JARAMILLO, JOHN M VA1992-03-24 → cancelled 2004-03-25
- MCCULLOCH, CHRIS J VA2026-07-14 active