Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4CDO callsign genealogy
Currently held by Darden, Michael S
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 KZ4CDO's current licensee, walking backwards.
- Darden, Michael SVAgranted 2026-05-08cancelled 2026-05-27
Successor callsigns
Callsigns held now by people who previously held KZ4CDO.
No current licensee on record previously held this callsign.