Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ4DZ callsign genealogy
Currently held by Hayden, Joseph 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 KZ4DZ's current licensee, walking backwards.
- Hayden, Joseph ASCgranted 2019-12-11cancelled 2024-02-07
Successor callsigns
Callsigns held now by people who previously held KZ4DZ.
- Hayden, Joseph ASCgranted 2025-05-30