Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3ARO callsign genealogy
Currently held by Mueller, Jonathan M
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 K3ARO's current licensee, walking backwards.
- Mueller, Jonathan MDEgranted 2019-03-25cancelled 2020-05-08
Successor callsigns
Callsigns held now by people who previously held K3ARO.
No current licensee on record previously held this callsign.