Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6AAZ callsign genealogy
Currently held by MONSEN, JON F
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 K6AAZ's current licensee, walking backwards.
- Thomas, MichaelCAgranted 2026-08-13cancelled 2026-09-01
Successor callsigns
Callsigns held now by people who previously held K6AAZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6AAZ, oldest first.
- MONSEN, JON F AZ2014-03-26 → cancelled 2026-05-27
- Thomas, Michael CA2026-09-01 active