Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6ADV callsign genealogy
Currently held by THOMPSON, CHAD
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 K6ADV's current licensee, walking backwards.
- THOMPSON, CHADCAgranted 2015-04-01cancelled 2016-06-21
Successor callsigns
Callsigns held now by people who previously held K6ADV.
- WOODCOCK, JOHN LWAgranted 2021-03-24
All historical holders
Every license row we've seen with the callsign K6ADV, oldest first.
- WOODCOCK, JOHN L WA2001-08-15 → cancelled 2011-05-24
- THOMPSON, CHAD CA2016-06-21 active