Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4CZM callsign genealogy
Currently held by DeSousa, Luis
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 KO4CZM's current licensee, walking backwards.
- DeSousa, LuisFLgranted 2013-12-11cancelled 2020-04-09
Successor callsigns
Callsigns held now by people who previously held KO4CZM.
- DeSousa, LuisFLgranted 2020-05-15