Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NS4I callsign genealogy
Currently held by MAXWELL, JOHN R
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 NS4I's current licensee, walking backwards.
- CAMP, LARRY MTNgranted 2008-12-10cancelled 2018-06-23
Successor callsigns
Callsigns held now by people who previously held NS4I.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NS4I, oldest first.
- MAXWELL, JOHN R FL2006-03-14 → cancelled 2018-06-05
- CAMP, LARRY M TN2018-06-23 active