Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7STS callsign genealogy
Currently held by BLOCK, DUANE D
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 K7STS's current licensee, walking backwards.
- Smith, Scott TUTgranted 2022-05-04cancelled 2022-05-24
Successor callsigns
Callsigns held now by people who previously held K7STS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7STS, oldest first.
- BLOCK, DUANE D CO2008-02-29 → cancelled 2020-02-29
- Smith, Scott T UT2022-05-24 active