Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO6MB callsign genealogy
Currently held by SCHAAL, DAVID E
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 KO6MB's current licensee, walking backwards.
- Schaal, David EWAgranted 2021-02-24cancelled 2021-03-16
Successor callsigns
Callsigns held now by people who previously held KO6MB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO6MB, oldest first.
- SCHAAL, DAVID E WA2005-10-19 → cancelled 2017-10-20
- Schaal, David E WA2021-03-16 active