Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO6SAB callsign genealogy
Currently held by Bartholf, Stephen 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 KO6SAB's current licensee, walking backwards.
- Bartholf, Stephen ACAgranted 2025-03-06cancelled 2025-03-25
Successor callsigns
Callsigns held now by people who previously held KO6SAB.
No current licensee on record previously held this callsign.