uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

N3XDU callsign genealogy

Currently held by Grant, Robert M

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 N3XDU's current licensee, walking backwards.

  1. KB3BNR
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N3XDU.

No current licensee on record previously held this callsign.

← Back to N3XDU License history →