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

WB0ROK callsign genealogy

Currently held by Cho, Seung

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 WB0ROK's current licensee, walking backwards.

  1. KE0ETWcancelled· G
    CHO, SEUNGCOgranted 2014-10-07cancelled 2015-06-23
  2. WB6KENcancelled· T
    Cho, SeungCOgranted 2014-10-07cancelled 2015-06-03
  3. KK6OYLcancelled· T
    Cho, SeungCAgranted 2014-09-18cancelled 2014-10-07

Successor callsigns

Callsigns held now by people who previously held WB0ROK.

  1. N0AKXactive· G
    Cho, SeungGAgranted 2026-07-28
← Back to WB0ROK License history →