Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1RDM callsign genealogy
Currently held by BOSTON, DAVID 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 N1RDM's current licensee, walking backwards.
- Martino, Richard DTXgranted 2017-01-23cancelled 2017-04-08
Successor callsigns
Callsigns held now by people who previously held N1RDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1RDM, oldest first.
- BOSTON, DAVID W MA2003-12-23 → cancelled 2016-01-19
- Martino, Richard D TX2017-04-08 active