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

AB1K callsign genealogy

Currently held by Yu, Byongzoo

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 AB1K's current licensee, walking backwards.

  1. AF6Kactive· E
    Wesley, Fred PCAgranted 2022-04-12
  2. KF6MKcancelled· E
    Wesley, Fred PCAgranted 2018-04-25cancelled 2022-04-12

Successor callsigns

Callsigns held now by people who previously held AB1K.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AB1K, oldest first.

  • VARZHABEDIAN, DIRAN CT
    2008-01-11 → cancelled 2020-03-06
  • Yu, Byongzoo CA
    2020-03-24 active
← Back to AB1K License history →