Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5STR callsign genealogy
Currently held by JUERGENS, 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 K5STR's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K5STR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5STR, oldest first.
- MACZALI, GEORGE J TX2001-01-16 → cancelled 2013-03-28
- JUERGENS, THOMAS R TX2025-06-06 active