Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3APZ callsign genealogy
Currently held by Heller, Karl W
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 N3APZ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held N3APZ.
- HELLER, KARL WPAgranted 1995-05-12cancelled 2003-02-05