Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1MDK callsign genealogy
Currently held by Swift, Lawrence A
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 W1MDK's current licensee, walking backwards.
- Swift, Lawrence AMAgranted 2023-03-03cancelled 2023-04-04
Successor callsigns
Callsigns held now by people who previously held W1MDK.
No current licensee on record previously held this callsign.