Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KR4APC callsign genealogy
Currently held by Jankowski Jr, Joseph J
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 KR4APC'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 KR4APC.
- Jankowski Jr, Joseph JFLgranted 2025-04-01