Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1LMS callsign genealogy
Currently held by SHEEHAN, DONALD M
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 W1LMS's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1LMS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1LMS, oldest first.
- SHEEHAN, DONALD M NH1996-07-17 → cancelled 2008-07-18
- Williams, Tony C CA2023-08-19 active