Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI6TRX callsign genealogy
Currently held by SOBOLEWSKI, DAVID A
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 KI6TRX's current licensee, walking backwards.
- SOBOLEWSKI, DAVID ACAgranted 2003-10-10cancelled 2008-10-22
Successor callsigns
Callsigns held now by people who previously held KI6TRX.
No current licensee on record previously held this callsign.