Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1SQ callsign genealogy
Currently held by CHURCHILL, MICHAEL 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 W1SQ's current licensee, walking backwards.
- LaFlamme, Robert MCTgranted 2006-04-03cancelled 2006-11-25
Successor callsigns
Callsigns held now by people who previously held W1SQ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1SQ, oldest first.
- CHURCHILL, MICHAEL A CT1994-10-19 → cancelled 2006-10-20
- LaFlamme, Robert M CT2016-10-31 active