Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA1JFB 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 KA1JFB's current licensee, walking backwards.
- BUTKIEWICZ SR, JOSEPH FGAgranted 2025-07-15
Successor callsigns
Callsigns held now by people who previously held KA1JFB.
- BUTKIEWICZ SR, JOSEPH FGAgranted 2025-07-15