Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9WJM callsign genealogy
Currently held by MRUK, WILLIAM 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 K9WJM's current licensee, walking backwards.
- MRUK, WILLIAM JINgranted 2016-05-03cancelled 2018-12-18
Successor callsigns
Callsigns held now by people who previously held K9WJM.
No current licensee on record previously held this callsign.