Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NN4J callsign genealogy
Currently held by Baker Jr, Howard M
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 NN4J's current licensee, walking backwards.
- Baker Jr, Howard MNCgranted 1999-01-20cancelled 2007-05-05
Successor callsigns
Callsigns held now by people who previously held NN4J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NN4J, oldest first.
- HENLEY, HOWARD G NC1996-05-01 → cancelled 2003-12-04
- Baker Jr, Howard M NC2017-03-16 active