Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KL7XX callsign genealogy
Currently held by Preston, William 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 KL7XX's current licensee, walking backwards.
- WL7CWUcancelledSusitna Wireless Amateur GroupAKgranted 2009-02-02cancelled 2009-02-24
Successor callsigns
Callsigns held now by people who previously held KL7XX.
- Preston, William AMIgranted 2024-10-12
All historical holders
Every license row we've seen with the callsign KL7XX, oldest first.
- Preston, William A MI2001-03-15 → cancelled 2004-11-19
- SUSITNA WIRELESS AMATEUR GROUP AK2018-12-04 active