Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6USA callsign genealogy
Currently held by MASSEY, WILLIAM L
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 K6USA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K6USA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6USA, oldest first.
- MASSEY, WILLIAM L AZ2016-04-27 → cancelled 2025-12-18
- A1 MORSE CODE GANG CA2026-03-24 active