Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4ZZK callsign genealogy
Currently held by LUDWICK JR, CLIFFORD 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 N4ZZK'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 N4ZZK.
- LUDWICK JR, CLIFFORD AGAgranted 2016-10-03