Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4MX callsign genealogy
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 KR4MX's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KR4MX.
- SCHMELKIN, RICHARD SFLgranted 1995-03-08cancelled 1999-12-18