Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KL7XU callsign genealogy
Currently held by MIILLE, CLAYBURN J
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 KL7XU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KL7XU.
- MIILLE, CLAYBURN JNYgranted 1998-09-24cancelled 2010-09-25
All historical holders
Every license row we've seen with the callsign KL7XU, oldest first.
- MIILLE, CLAYBURN J NY1998-09-24 → cancelled 2002-01-30
- Chamberlain, Frank A AK2023-10-31 active