Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB8BAB callsign genealogy
Currently held by KOSKO, ROSEMARY 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 KB8BAB's current licensee, walking backwards.
- Brummans, Bart AMIgranted 2012-03-24cancelled 2012-10-30
Successor callsigns
Callsigns held now by people who previously held KB8BAB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB8BAB, oldest first.
- KOSKO, ROSEMARY E OH1996-10-08 → cancelled 2008-10-09
- Brummans, Bart A MI2022-10-19 active