Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NR3I callsign genealogy
Currently held by DE FREES, HAROLD F
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 NR3I's current licensee, walking backwards.
- KB3NCBcancelledDayspring School Amateur Radio ClubDEgranted 2006-01-23cancelled 2007-03-10
Successor callsigns
Callsigns held now by people who previously held NR3I.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NR3I, oldest first.
- DE FREES, HAROLD F FL1993-05-25 → cancelled 2005-05-26
- QRP Group DE2017-03-06 active