Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9MAR callsign genealogy
Currently held by Rolon, Mario W
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 KD9MAR's current licensee, walking backwards.
- Rolon, Mario WWIgranted 2014-12-03cancelled 2014-12-30
Successor callsigns
Callsigns held now by people who previously held KD9MAR.
No current licensee on record previously held this callsign.