Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4SYJ callsign genealogy
Currently held by Lubinski, David R
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 KN4SYJ'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 KN4SYJ.
- Lubinski, David RVTgranted 2020-12-29