Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ4DJ callsign genealogy
Currently held by Noonan, Robert A
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 KZ4DJ's current licensee, walking backwards.
- Noonan, Robert ATNgranted 2024-01-03cancelled 2024-01-10
Successor callsigns
Callsigns held now by people who previously held KZ4DJ.
No current licensee on record previously held this callsign.