Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4MSL callsign genealogy
Currently held by Lonas, Michael S
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 KM4MSL's current licensee, walking backwards.
- Lonas, Michael STNgranted 2015-05-27cancelled 2015-06-20
Successor callsigns
Callsigns held now by people who previously held KM4MSL.
No current licensee on record previously held this callsign.