Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4NJJ callsign genealogy
Currently held by Freeman, Dr. William P
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 N4NJJ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N4NJJ.
- Freeman, William PNVgranted 2015-10-06cancelled 2016-01-19
All historical holders
Every license row we've seen with the callsign N4NJJ, oldest first.
- Freeman, Bill NY2010-10-30 → cancelled 2015-10-06
- Freeman, Dr. William P NV2025-11-21 active