Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD0SB callsign genealogy
Currently held by BOOT, MICHAEL A
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 KD0SB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD0SB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD0SB, oldest first.
- BOOT, MICHAEL A MN2004-01-20 → cancelled 2016-02-02
- Bouck, Steven B MO2020-09-26 active