Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WN4JJN callsign genealogy
Currently held by Nichols, John 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 WN4JJN's current licensee, walking backwards.
- Nichols, John JFLgranted 2019-03-21cancelled 2020-05-12
Successor callsigns
Callsigns held now by people who previously held WN4JJN.
- Nichols III, John JNJgranted 2021-07-03cancelled 2025-12-30