Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0TST callsign genealogy
Currently held by Thompson, Terrance S
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 KA0TST's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KA0TST.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA0TST, oldest first.
- ZICK JR, WALLACE S MN1994-10-04 → cancelled 2006-10-05
- Thompson, Terrance S MN2025-09-27 active