Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9OOO callsign genealogy
Currently held by Zebrowski, Jacek J
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 W9OOO's current licensee, walking backwards.
- Zebrowski, Jacek JMIgranted 2011-05-03cancelled 2011-07-15
Successor callsigns
Callsigns held now by people who previously held W9OOO.
No current licensee on record previously held this callsign.