Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1MDO callsign genealogy
Currently held by Downey, Matthew J
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 K1MDO's current licensee, walking backwards.
- Downey, Matthew JCAgranted 2016-05-02cancelled 2016-05-27
Successor callsigns
Callsigns held now by people who previously held K1MDO.
No current licensee on record previously held this callsign.