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

N0ISY callsign genealogy

Currently held by KNUTSON, DANIEL A

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 N0ISY's current licensee, walking backwards.

  1. KB0BFS
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N0ISY.

No current licensee on record previously held this callsign.

← Back to N0ISY License history →