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

N9UWB callsign genealogy

Currently held by FISCHER, WILLIAM L

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 N9UWB's current licensee, walking backwards.

  1. KB9IHW
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N9UWB.

No current licensee on record previously held this callsign.

← Back to N9UWB License history →