Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW4JON callsign genealogy
Currently held by WILLIAMS, 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 KW4JON's current licensee, walking backwards.
- WILLIAMS, JOHN PTNgranted 2012-11-29cancelled 2013-04-23
Successor callsigns
Callsigns held now by people who previously held KW4JON.
No current licensee on record previously held this callsign.