Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7JCO callsign genealogy
Currently held by Oliver, Jeffery C
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 N7JCO's current licensee, walking backwards.
- Oliver, Jeffery CORgranted 2025-12-16cancelled 2026-01-03
Successor callsigns
Callsigns held now by people who previously held N7JCO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7JCO, oldest first.
- CZARNECKI, DANIEL UT2016-12-01 → cancelled 2021-07-21
- Oliver, Jeffery C OR2026-01-03 active