Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC1CZ callsign genealogy
Currently held by Girdo, 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 AC1CZ'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 AC1CZ.
- Girdo, Robert AMAgranted 2018-11-24