Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4ROK callsign genealogy
Currently held by MURPH JR, JOHN P
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 KN4ROK'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 KN4ROK.
- MURPH JR, JOHN PNCgranted 2019-12-06