Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0MLH callsign genealogy
Currently held by Heinlein, 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 K0MLH's current licensee, walking backwards.
- Heinlein, Matthew LNEgranted 2024-11-15cancelled 2024-12-10
Successor callsigns
Callsigns held now by people who previously held K0MLH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0MLH, oldest first.
- LOAR JR, RALPH L MO1996-06-18 → cancelled 2008-06-19
- Heinlein, Matthew L WY2024-12-10 active