Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MSL callsign genealogy
Currently held by LANGLEY, MICHAEL S
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 K4MSL's current licensee, walking backwards.
- LANGLEY, MICHAEL SGAgranted 1993-11-09cancelled 2003-09-20
Successor callsigns
Callsigns held now by people who previously held K4MSL.
No current licensee on record previously held this callsign.