Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA6ZOO callsign genealogy
Currently held by Steffora, Michael P
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 KA6ZOO's current licensee, walking backwards.
- Steffora, Michael PCAgranted 2024-10-25cancelled 2024-11-13
Successor callsigns
Callsigns held now by people who previously held KA6ZOO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA6ZOO, oldest first.
- HERBERT, CALLIS F CA2007-08-28 → cancelled 2019-11-22
- Steffora, Michael P CA2024-11-13 active