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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

N4SPN callsign genealogy

Currently held by MC GUIRE, RALPH H

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 N4SPN's current licensee, walking backwards.

  1. KB4BXI
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N4SPN.

No current licensee on record previously held this callsign.

← Back to N4SPN License history →