Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KS0T callsign genealogy
Currently held by Heath, Malcolm
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 KS0T's current licensee, walking backwards.
- Heath, MalcolmORgranted 2018-07-23cancelled 2019-07-30
Successor callsigns
Callsigns held now by people who previously held KS0T.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KS0T, oldest first.
- SCHULTZ, MICHAEL E MN2007-04-17 → cancelled 2019-07-10
- Heath, Malcolm OR2019-07-30 active