Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1DM callsign genealogy
Currently held by CATAMOUNT AMATEUR RADIO CLUB
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 W1DM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1DM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1DM, oldest first.
- CATAMOUNT AMATEUR RADIO CLUB MA2007-10-24 → cancelled 2019-10-25
- MELANSON, DONALD W MA2019-11-13 active