Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1EFC callsign genealogy
Currently held by MC DONALD, LAURENT R
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 W1EFC's current licensee, walking backwards.
- MC DONALD, LAURENT RDEgranted 2001-03-27cancelled 2001-05-11
Successor callsigns
Callsigns held now by people who previously held W1EFC.
No current licensee on record previously held this callsign.