Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9JFG callsign genealogy
Currently held by CHAMBERLIN, DERALD 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 N9JFG's current licensee, walking backwards.
- GRIMES, JOHN FILgranted 2005-03-01cancelled 2005-07-26
Successor callsigns
Callsigns held now by people who previously held N9JFG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9JFG, oldest first.
- CHAMBERLIN, DERALD J IL1990-01-16 → cancelled 2002-03-07
- GRIMES, JOHN F IL2025-07-12 active