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

K3QO callsign genealogy

Currently held by HARGENRADER, JAMES R

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 K3QO's current licensee, walking backwards.

  1. KE3WEcancelled· E
    Fedor, Christopher LPAgranted 2003-12-31cancelled 2009-05-09
  2. KB8ETE
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held K3QO.

  1. K4QOcancelled· E
    HARGENRADER, JAMES RSCgranted 2004-07-30cancelled 2009-10-21

All historical holders

Every license row we've seen with the callsign K3QO, oldest first.

  • HARGENRADER, JAMES R SC
    2003-11-01 → cancelled 2004-07-30
  • Fedor, Christopher L PA
    2019-05-07 active
← Back to K3QO License history →