Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1FEI callsign genealogy
Currently held by He, Yifei
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 K1FEI's current licensee, walking backwards.
- He, YifeiCAgranted 2021-11-26cancelled 2021-12-14
Successor callsigns
Callsigns held now by people who previously held K1FEI.
- He, YifeiCAgranted 2023-10-11