Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1AZZ callsign genealogy
Currently held by Sanders, John W
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 K1AZZ's current licensee, walking backwards.
- Shirley, Keith AMEgranted 2022-03-09cancelled 2025-01-24
Successor callsigns
Callsigns held now by people who previously held K1AZZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1AZZ, oldest first.
- Sanders, John W NH2012-12-11 → cancelled 2024-12-12
- Shirley, Keith A ME2025-01-24 active