Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3TJK callsign genealogy
Currently held by Koshko, Travis
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 W3TJK's current licensee, walking backwards.
- Koshko, Travis JVAgranted 2011-09-16cancelled 2016-07-15
Successor callsigns
Callsigns held now by people who previously held W3TJK.
- Koshko, TravisVAgranted 2024-04-16