Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KG4ZAK callsign genealogy
Currently held by MAGRUDER, CHARLES D
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 KG4ZAK's current licensee, walking backwards.
- Anderson, Zachary NORgranted 2024-07-30cancelled 2024-08-17
Successor callsigns
Callsigns held now by people who previously held KG4ZAK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KG4ZAK, oldest first.
- MAGRUDER, CHARLES D GA2003-03-14 → cancelled 2015-03-17
- Anderson, Zachary N OR2024-08-17 active