Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MLR callsign genealogy
Currently held by SWAFFORD JR, LUTHER
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 W4MLR's current licensee, walking backwards.
- LOPEZ, MIGDALIAILgranted 2014-08-27cancelled 2016-10-29
Successor callsigns
Callsigns held now by people who previously held W4MLR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MLR, oldest first.
- SWAFFORD JR, LUTHER MD2004-02-23 → cancelled 2016-05-18
- LOPEZ, MIGDALIA FL2016-10-29 active