Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6ATV callsign genealogy
Currently held by SULPHUR MOUNTAIN REPEATER ASSN INC
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 K6ATV's current licensee, walking backwards.
- DUNCKEL, WALTER ACAgranted 2013-04-30cancelled 2014-09-12
Successor callsigns
Callsigns held now by people who previously held K6ATV.
All historical holders
Every license row we've seen with the callsign K6ATV, oldest first.
- SULPHUR MOUNTAIN REPEATER ASSN INC CA1998-12-30 → cancelled 2007-07-07
- DUNCKEL, WALTER A CA2024-08-07 active