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

N4YSX callsign genealogy

Currently held by KROON, RONALD 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 N4YSX's current licensee, walking backwards.

  1. KC4OZW
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N4YSX.

No current licensee on record previously held this callsign.

← Back to N4YSX License history →