Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6HTF callsign genealogy
Currently held by SUMITANI, SHUNSUKE S
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 K6HTF's current licensee, walking backwards.
- SUMITANI, SHUNSUKE SCAgranted 2004-04-01cancelled 2012-01-31
Successor callsigns
Callsigns held now by people who previously held K6HTF.
No current licensee on record previously held this callsign.