Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3ST callsign genealogy
Currently held by Takahashi, Shoichi
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 K3ST's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K3ST.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3ST, oldest first.
- THOMPSON, SAMUEL PA2002-11-07 → cancelled 2015-02-03
- Takahashi, Shoichi CA2024-12-14 active