Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0TIM callsign genealogy
Currently held by Thompson Sr, Timothy 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 KA0TIM's current licensee, walking backwards.
- Thompson Sr, Timothy DMNgranted 2023-07-26cancelled 2023-08-15
Successor callsigns
Callsigns held now by people who previously held KA0TIM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA0TIM, oldest first.
- SIGELMAN, SAM J MN2004-12-08 → cancelled 2016-11-22
- Thompson Sr, Timothy D MN2023-08-15 active