Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1ZA callsign genealogy
Currently held by BUTKIEWICZ SR, JOSEPH F
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 KB1ZA's current licensee, walking backwards.
- BUTKIEWICZ SR, JOSEPH FGAgranted 2021-03-12cancelled 2025-07-15
Successor callsigns
Callsigns held now by people who previously held KB1ZA.
All historical holders
Every license row we've seen with the callsign KB1ZA, oldest first.
- BUTKIEWICZ SR, JOSEPH F GA2018-04-24 → cancelled 2021-03-12
- BUTKIEWICZ SR, JOSEPH F GA2025-07-15 active
- BUTKIEWICZ SR, JOSEPH F— → cancelled 1999-07-09