Confidence: Medium · Source: FCC ULS · As of 2026-09-15
KB5GTK callsign genealogy
Currently held by THOMPSON, JAMES B
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 KB5GTK's current licensee, walking backwards.
- Thompson, TamTXgranted 2014-05-12cancelled 2014-05-30
Successor callsigns
Callsigns held now by people who previously held KB5GTK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5GTK, oldest first.
- THOMPSON, JAMES B TX1998-03-17 → cancelled 2010-03-18
- Thompson, Tam TX2014-05-30 → cancelled 2026-06-02