Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4SDN callsign genealogy
Currently held by Miller, James S
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 N4SDN's current licensee, walking backwards.
- Miller, James SFLgranted 2016-03-10cancelled 2020-11-06
Successor callsigns
Callsigns held now by people who previously held N4SDN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4SDN, oldest first.
- PEOPLES, DAVID L TN2008-02-26 → cancelled 2020-04-08
- Miller, James S FL2020-11-06 active