Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MLS callsign genealogy
Currently held by Steinhoff, Matthew L
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 K4MLS's current licensee, walking backwards.
- Steinhoff, Matthew LFLgranted 2001-05-08cancelled 2001-06-05
Successor callsigns
Callsigns held now by people who previously held K4MLS.
No current licensee on record previously held this callsign.