Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4TRK callsign genealogy
Currently held by Kreutzer, Thomas R
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 K4TRK's current licensee, walking backwards.
- Kreutzer, Thomas RSCgranted 2015-11-25cancelled 2016-04-05
Successor callsigns
Callsigns held now by people who previously held K4TRK.
No current licensee on record previously held this callsign.