Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4USA callsign genealogy
Currently held by HAGERMAN III, STEPHEN M
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 KM4USA's current licensee, walking backwards.
- HAGERMAN III, STEPHEN MSCgranted 2015-10-01cancelled 2015-10-24
Successor callsigns
Callsigns held now by people who previously held KM4USA.
- HAGERMAN III, STEPHEN MSCgranted 2021-04-09