Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0FBI callsign genealogy
Currently held by XI, CHENGYANG
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 W0FBI's current licensee, walking backwards.
- XI, CHENGYANGMDgranted 2021-05-25cancelled 2021-06-15
Successor callsigns
Callsigns held now by people who previously held W0FBI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0FBI, oldest first.
- LOHR, DAVID C IA2006-06-13 → cancelled 2018-08-14
- XI, CHENGYANG MD2021-06-15 active