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

W0UJO callsign genealogy

Currently held by Maistryk, Wolodymyr

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 W0UJO's current licensee, walking backwards.

  1. W4UJOcancelled· E
    Maistryk, WolodymyrALgranted 2012-06-02cancelled 2014-09-09
  2. WA0UJOcancelled· E
    MAISTRYK, WOLODYMYRALgranted 2011-06-24cancelled 2012-06-02

Successor callsigns

Callsigns held now by people who previously held W0UJO.

No current licensee on record previously held this callsign.

← Back to W0UJO License history →