Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4JAZ callsign genealogy
Currently held by UNDERHILL, PETER 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 N4JAZ's current licensee, walking backwards.
- UNDERHILL, PETER Jcancelled 1998-03-24
Successor callsigns
Callsigns held now by people who previously held N4JAZ.
No current licensee on record previously held this callsign.