Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MLM callsign genealogy
Currently held by MARLER, MICHAEL 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 W4MLM's current licensee, walking backwards.
- MARLER, MICHAEL LNCgranted 2007-04-20cancelled 2014-02-11
Successor callsigns
Callsigns held now by people who previously held W4MLM.
- JOHNSON, RALPH BALgranted 2020-09-01
All historical holders
Every license row we've seen with the callsign W4MLM, oldest first.
- JOHNSON, RALPH B AL1994-09-22 → cancelled 2000-09-23
- MARLER, MICHAEL L NC2024-01-17 active