Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ7ST callsign genealogy
Currently held by OSTYN, MICHAEL V
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 KJ7ST's current licensee, walking backwards.
- Tucker, John SWAgranted 2019-02-19cancelled 2024-07-09
Successor callsigns
Callsigns held now by people who previously held KJ7ST.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ7ST, oldest first.
- OSTYN, MICHAEL V ID1996-02-25 → cancelled 2007-10-31
- Tucker, John S WA2024-07-09 active