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

AB9SO callsign genealogy

Currently held by AUGSBURGER, DEREK C

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 AB9SO's current licensee, walking backwards.

  1. W9RYNcancelled· E
    AUGSBURGER, DEREK CINgranted 2001-05-08cancelled 2008-11-25
  2. N9RYNcancelled· T
    AUGSBURGER, DEREK CINgranted 1993-01-19cancelled 2001-05-08

Successor callsigns

Callsigns held now by people who previously held AB9SO.

  1. N9GUactive· E
    AUGSBURGER, DEREK CINgranted 2023-08-08
← Back to AB9SO License history →