Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9DFA callsign genealogy
Currently held by Koch, Jiang Fei A
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 K9DFA's current licensee, walking backwards.
- Koch, Jiang Fei AORgranted 2025-07-15cancelled 2025-08-08
Successor callsigns
Callsigns held now by people who previously held K9DFA.
No current licensee on record previously held this callsign.