Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4ZJB callsign genealogy
Currently held by Bortolot, Zachary
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 N4ZJB's current licensee, walking backwards.
- Bortolot, Zachary JVAgranted 2022-03-08cancelled 2022-03-26
Successor callsigns
Callsigns held now by people who previously held N4ZJB.
- HARBER, MARK STNgranted 2001-04-16cancelled 2013-03-13