Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO4BSA callsign genealogy
Currently held by Rushing, Michael K
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 KO4BSA's current licensee, walking backwards.
- Rushing, Michael KFLgranted 2005-08-03cancelled 2005-09-09
Successor callsigns
Callsigns held now by people who previously held KO4BSA.
No current licensee on record previously held this callsign.