Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6CLU callsign genealogy
Currently held by LEAK, ROBERT 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 K6CLU's current licensee, walking backwards.
- LU, XIAOFENG CCAgranted 2017-11-29cancelled 2017-12-19
Successor callsigns
Callsigns held now by people who previously held K6CLU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6CLU, oldest first.
- LEAK, ROBERT E OR1989-02-07 → cancelled 2001-02-08
- LU, XIAOFENG C CA2017-12-19 active