Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9GPX callsign genealogy
Currently held by KOCH, RUSSELL S
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 K9GPX's current licensee, walking backwards.
- Schoepp, Kenneth JILgranted 2026-03-26cancelled 2026-04-14
Successor callsigns
Callsigns held now by people who previously held K9GPX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9GPX, oldest first.
- KOCH, RUSSELL S IL1996-12-03 → cancelled 2008-12-04
- Schoepp, Kenneth J IL2026-04-14 active