Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA6CJL callsign genealogy
Currently held by COOK, FRANK
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 KA6CJL's current licensee, walking backwards.
- Livingston, Carlos JCAgranted 2018-06-04cancelled 2018-06-22
Successor callsigns
Callsigns held now by people who previously held KA6CJL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA6CJL, oldest first.
- COOK, FRANK CA1991-07-16 → cancelled 2003-07-18
- Livingston, Carlos J CA2018-06-22 active