Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NA6D callsign genealogy
Currently held by MATTHEWS, RALPH 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 NA6D's current licensee, walking backwards.
- Armstrong, NigelCAgranted 2023-03-07cancelled 2023-06-03
Successor callsigns
Callsigns held now by people who previously held NA6D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NA6D, oldest first.
- MATTHEWS, RALPH W CA2013-01-22 → cancelled 2021-05-15
- Armstrong, Nigel CA2023-06-03 active