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

K9DCO callsign genealogy

Currently held by OFSTEIN, DOVID 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 K9DCO's current licensee, walking backwards.

  1. KD9JWKcancelled· E
    Gifford, Robert WINgranted 2017-12-19cancelled 2018-10-12

Successor callsigns

Callsigns held now by people who previously held K9DCO.

  1. N5OVAcancelled· E
    OFSTEIN, DOVID CINgranted 2007-06-08cancelled 2008-06-17

All historical holders

Every license row we've seen with the callsign K9DCO, oldest first.

  • OFSTEIN, DOVID C IN
    2006-01-10 → cancelled 2007-06-08
  • Gifford, Robert W IN
    2018-10-12 active
← Back to K9DCO License history →