Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7SJ callsign genealogy
Currently held by JOOS, STEVEN 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 W7SJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W7SJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7SJ, oldest first.
- HOOK, RONALD L MO2009-11-02 → cancelled 2022-02-01
- JOOS, STEVEN J WA2022-02-18 active