Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4OX callsign genealogy
Currently held by MARSHALL, GARRETT 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 KZ4OX's current licensee, walking backwards.
- MARSHALL, GARRETT CKYgranted 2022-11-16cancelled 2024-12-23
Successor callsigns
Callsigns held now by people who previously held KZ4OX.
No current licensee on record previously held this callsign.