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

N7OSN callsign genealogy

Currently held by HARTEN, WILLIAM S

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 N7OSN's current licensee, walking backwards.

  1. KB7JYS
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held N7OSN.

No current licensee on record previously held this callsign.

← Back to N7OSN License history →