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

WI0H callsign genealogy

Currently held by MAZUR, MOLLY

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 WI0H's current licensee, walking backwards.

  1. KF8CCNcancelled· E
    MAZUR, MOLLYOHgranted 2024-09-07cancelled 2025-06-10

Successor callsigns

Callsigns held now by people who previously held WI0H.

  1. W7IHactive· E
    Rahto, Tim PNVgranted 2023-05-12
  2. N0JNcancelled· E
    Rahto, Timothy PIAgranted 2019-08-30cancelled 2020-01-24

All historical holders

Every license row we've seen with the callsign WI0H, oldest first.

  • WROBLESKI, JAMES A MN
    1999-01-21 → cancelled 2011-01-22
  • Rahto, Timothy P IA
    2011-07-16 → cancelled 2019-08-30
  • Rahto, Tim P NV
    2020-01-24 → cancelled 2023-05-12
  • MAZUR, MOLLY OH
    2025-06-10 active
← Back to WI0H License history →