Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD9EN callsign genealogy
Currently held by MUELLER, MARTIN
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 AD9EN's current licensee, walking backwards.
- MUELLER, MARTINWIgranted 2023-08-02cancelled 2024-04-29
Successor callsigns
Callsigns held now by people who previously held AD9EN.
- Mueller, MartinWIgranted 2024-05-25