Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0ZJB callsign genealogy
Currently held by Blackwell, Zachary 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 W0ZJB's current licensee, walking backwards.
- Blackwell, Zachary JCOgranted 2017-08-17cancelled 2021-04-16
Successor callsigns
Callsigns held now by people who previously held W0ZJB.
No current licensee on record previously held this callsign.