Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4MSJ callsign genealogy
Currently held by BUSEY, JONATHAN C
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 KM4MSJ's current licensee, walking backwards.
- BUSEY, JONATHAN CVAgranted 2015-07-13cancelled 2015-08-18
Successor callsigns
Callsigns held now by people who previously held KM4MSJ.
No current licensee on record previously held this callsign.