Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD9KA callsign genealogy
Currently held by ST JOHN, JAMES 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 KD9KA's current licensee, walking backwards.
- ST JOHN, JAMES DINgranted 2014-07-29cancelled 2020-12-29
Successor callsigns
Callsigns held now by people who previously held KD9KA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD9KA, oldest first.
- SCHIMMOLER, RICHARD A IL2004-02-26 → cancelled 2016-05-25
- ST JOHN, JAMES D IN2020-12-29 active