Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9CFI callsign genealogy
Currently held by CHANG, ALBERT 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 N9CFI's current licensee, walking backwards.
- Welch, KenILgranted 2003-04-01cancelled 2003-05-03
Successor callsigns
Callsigns held now by people who previously held N9CFI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9CFI, oldest first.
- CHANG, ALBERT J CA1988-05-10 → cancelled 2000-05-11
- Welch, Ken IL2013-03-08 → cancelled 2025-05-06