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

K4DGO callsign genealogy

Currently held by O BRIEN, DAVID G

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 K4DGO's current licensee, walking backwards.

  1. KD2QAcancelled· A
    O BRIEN, DAVID GNCgranted 2005-09-28cancelled 2006-01-10

Successor callsigns

Callsigns held now by people who previously held K4DGO.

  1. WA2YFLactive· A
    O BRIEN, DAVID GNYgranted 2020-07-03
← Back to K4DGO License history →