Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9TBK callsign genealogy
Currently held by Nguyen, Quan
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 K9TBK's current licensee, walking backwards.
- Nguyen, QuanTXgranted 2018-04-03cancelled 2019-04-16
Successor callsigns
Callsigns held now by people who previously held K9TBK.
No current licensee on record previously held this callsign.