Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO6MDM callsign genealogy
Currently held by Grassetti, Dan 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 KO6MDM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KO6MDM.
No current licensee on record previously held this callsign.