Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9STV callsign genealogy
Currently held by OSTENBERG, STEVEN D
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 K9STV's current licensee, walking backwards.
- OSTENBERG, STEVEN DCAgranted 2013-07-19cancelled 2013-08-09
Successor callsigns
Callsigns held now by people who previously held K9STV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9STV, oldest first.
- WALDO, SHIRLEY R IN1996-04-22 → cancelled 2008-04-23
- OSTENBERG, STEVEN D CA2023-05-25 active