Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX7U callsign genealogy
Currently held by RIZZO, RICHARD P
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 KX7U's current licensee, walking backwards.
- Green, JosephAZgranted 2025-06-25cancelled 2026-03-27
Successor callsigns
Callsigns held now by people who previously held KX7U.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KX7U, oldest first.
- RIZZO, RICHARD P CA2013-10-21 → cancelled 2026-03-06
- Green, Joseph AZ2026-03-27 active