Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1EJJ callsign genealogy
Currently held by Thach, Tien
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 K1EJJ's current licensee, walking backwards.
- Thach, TienWAgranted 2017-10-10cancelled 2017-10-31
Successor callsigns
Callsigns held now by people who previously held K1EJJ.
- Thach, TienWAgranted 2017-12-02