Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4SLU callsign genealogy
Currently held by BETTS JR, WILLIAM C
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 KJ4SLU's current licensee, walking backwards.
- BETTS JR, WILLIAM CFLgranted 2006-05-23cancelled 2010-02-23
Successor callsigns
Callsigns held now by people who previously held KJ4SLU.
- BETTS JR, WILLIAM CFLgranted 2016-06-17