Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9QLX callsign genealogy
Currently held by Hachmuth, Karl H
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 KC9QLX's current licensee, walking backwards.
- Hachmuth, Karl HILgranted 2025-08-23cancelled 2025-09-16
Successor callsigns
Callsigns held now by people who previously held KC9QLX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC9QLX, oldest first.
- Hachmuth, Karl H IL2009-09-21 → cancelled 2021-09-22
- Hachmuth, Karl H IL2025-09-16 active