Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0RUP callsign genealogy
Currently held by Kowal, Harry D
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 KC0RUP'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 KC0RUP.
- Kowal, Harry DOKgranted 2014-03-04cancelled 2026-03-24