Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC4VZ callsign genealogy
Currently held by LAMBERT, JOHN H
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 AC4VZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AC4VZ.
- LAMBERT, JOHN HSCgranted 2014-02-19cancelled 2022-10-04