Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1ATC callsign genealogy
Currently held by MC CARTHY, HENRY J
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 W1ATC's current licensee, walking backwards.
- BELL, SEAN PILgranted 2005-08-19cancelled 2007-04-10
Successor callsigns
Callsigns held now by people who previously held W1ATC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1ATC, oldest first.
- MC CARTHY, HENRY J NH1988-10-11 → cancelled 2000-10-12
- BELL, SEAN P TX2017-02-08 active