Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO9DGM callsign genealogy
Currently held by Mazzella Jr, David G
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 KO9DGM's current licensee, walking backwards.
- Mazzella Jr, David GFLgranted 2020-11-13cancelled 2020-12-04
Successor callsigns
Callsigns held now by people who previously held KO9DGM.
- Mazzella Jr, David GFLgranted 2021-12-11