Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM5XX callsign genealogy
Currently held by JOHNS, SCOTT 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 KM5XX's current licensee, walking backwards.
- JOHNS, SCOTT MTXgranted 1999-07-07cancelled 2003-01-22
Successor callsigns
Callsigns held now by people who previously held KM5XX.
No current licensee on record previously held this callsign.