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

N4HIO callsign genealogy

Currently held by HADDOCK, SHIRLEY 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 N4HIO's current licensee, walking backwards.

  1. KA4TCN
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N4HIO.

No current licensee on record previously held this callsign.

← Back to N4HIO License history →