Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1DW callsign genealogy
Currently held by MORSE, NAHUM W
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 W1DW's current licensee, walking backwards.
- MORSE, NAHUM WMAgranted 1998-05-01cancelled 2008-02-02
Successor callsigns
Callsigns held now by people who previously held W1DW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1DW, oldest first.
- MULLEN, JOHN L MA1998-06-23 → cancelled 2004-12-09
- MORSE, NAHUM W ME2018-02-16 active