Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KX9H callsign genealogy
Currently held by ANDRZEJEWSKI, WILLIAM R
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 KX9H's current licensee, walking backwards.
- Jacobs, Charles WINgranted 2020-06-15cancelled 2020-10-24
Successor callsigns
Callsigns held now by people who previously held KX9H.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KX9H, oldest first.
- ANDRZEJEWSKI, WILLIAM R WI2008-08-26 → cancelled 2020-10-06
- Jacobs, Charles W IN2020-10-24 active