Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6KFL callsign genealogy
Currently held by KOCH SR, ARNOLD A
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 W6KFL's current licensee, walking backwards.
- Kim, JohnCAgranted 2017-09-19cancelled 2017-10-07
Successor callsigns
Callsigns held now by people who previously held W6KFL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6KFL, oldest first.
- KOCH SR, ARNOLD A CA1988-02-09 → cancelled 2000-02-10
- Kim, John CA2017-10-07 active