Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6MCL callsign genealogy
Currently held by Leung, Michael C
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 K6MCL's current licensee, walking backwards.
- Leung, Michael CCAgranted 2018-03-06cancelled 2018-03-27
Successor callsigns
Callsigns held now by people who previously held K6MCL.
- Libbey, Martin CCAgranted 2020-09-21
All historical holders
Every license row we've seen with the callsign K6MCL, oldest first.
- Libbey, Martin C CA2006-02-04 → cancelled 2010-12-17
- Leung, Michael C CA2018-03-27 active