Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ4OS callsign genealogy
Currently held by Le Maitre, Marcus
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 KZ4OS's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KZ4OS.
- Le Maitre, MarcusVAgranted 2025-01-07