Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6APP callsign genealogy
Currently held by COOKE, CHARLES E
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 K6APP's current licensee, walking backwards.
- Ah Mook Sang, Bradley NHIgranted 2017-11-16cancelled 2018-02-23
Successor callsigns
Callsigns held now by people who previously held K6APP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6APP, oldest first.
- COOKE, CHARLES E CA2004-04-22 → cancelled 2016-07-19
- Ah Mook Sang, Bradley N HI2018-02-23 active