Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9LI callsign genealogy
Currently held by Tompsen, Lyle
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 K9LI's current licensee, walking backwards.
- Tompsen, LyleCOgranted 2025-04-19cancelled 2026-03-31
Successor callsigns
Callsigns held now by people who previously held K9LI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9LI, oldest first.
- Glick, Donald L IN2013-11-30 → cancelled 2026-03-06
- Tompsen, Lyle CO2026-03-31 active