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

W1HGY callsign genealogy

Currently held by MASHITA, NAOHIKO

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 W1HGY's current licensee, walking backwards.

  1. W6HGYcancelled· E
    MASHITA, NAOHIKOCAgranted 2015-10-14cancelled 2025-06-06
  2. KG6ZTKcancelled· E
    Mashita, NaohikoCAgranted 2005-06-24cancelled 2006-01-10

Successor callsigns

Callsigns held now by people who previously held W1HGY.

  1. W1JMJactive· E
    FIGLOCK, THADDEUS AMAgranted 2020-07-07

All historical holders

Every license row we've seen with the callsign W1HGY, oldest first.

  • FIGLOCK, THADDEUS A MA
    2018-08-13 → cancelled 2020-07-07
  • MASHITA, NAOHIKO CA
    2025-06-06 active
← Back to W1HGY License history →