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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

NU4B callsign genealogy

Currently held by MASO, LAWRENCE J

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 NU4B's current licensee, walking backwards.

  1. KA4ETL
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held NU4B.

No current licensee on record previously held this callsign.

← Back to NU4B License history →