Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4JKL callsign genealogy
Currently held by SCHONK JR, ROBERT 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 N4JKL's current licensee, walking backwards.
- Lang, Jeffrey KNCgranted 2013-01-16cancelled 2022-11-18
Successor callsigns
Callsigns held now by people who previously held N4JKL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4JKL, oldest first.
- SCHONK JR, ROBERT M NC2008-04-03 → cancelled 2020-06-30
- Lang, Jeffrey K NC2022-11-18 active