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

W6ZU callsign genealogy

Currently held by Xiao, Tianhao

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 W6ZU's current licensee, walking backwards.

  1. W6WJPcancelled· E
    PASTOR, JORGE LCAgranted 2019-03-01cancelled 2021-07-09
  2. N2TSGcancelled· G
    PASTOR, JORGE LCAgranted 2013-04-17cancelled 2019-03-01
  3. KC6OMS
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held W6ZU.

  1. NY7Hcancelled· E
    Xiao, TianhaoWAgranted 2019-06-18cancelled 2020-04-14

All historical holders

Every license row we've seen with the callsign W6ZU, oldest first.

  • WILEY, WESLEY H OR
    2006-09-21 → cancelled 2018-12-18
  • Xiao, Tianhao WA
    2019-02-01 → cancelled 2019-06-18
  • PASTOR, JORGE L CA
    2021-07-09 active
← Back to W6ZU License history →