Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4OKL callsign genealogy
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 N4OKL's current licensee, walking backwards.
- Emerson, Charles TALgranted 2001-07-16cancelled 2002-07-12
Successor callsigns
Callsigns held now by people who previously held N4OKL.
- HARMON, HAMZAWVgranted 2018-02-08
All historical holders
Every license row we've seen with the callsign N4OKL, oldest first.
- Emerson, Charles T AL2012-05-18 → cancelled 2024-07-13
- —— → cancelled 1998-01-14