Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4YL callsign genealogy
Currently held by KNUPKE JR, PAUL E
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 KR4YL'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 KR4YL.
- KNUPKE JR, PAUL EFLgranted 2000-08-04cancelled 2002-09-24