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

W3IS callsign genealogy

Currently held by OBRADOVICH, JOHN W

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 W3IS's current licensee, walking backwards.

  1. N7ISLcancelled· E
    HELSTEN, LANCE FUTgranted 2006-08-22cancelled 2007-04-28
  2. KE7HMZcancelled· E
    HELSTEN, LANCE FUTgranted 2006-04-24cancelled 2006-08-22

Successor callsigns

Callsigns held now by people who previously held W3IS.

  1. KG7Jactive· E
    OBRADOVICH, JOHN WAZgranted 2025-03-22

All historical holders

Every license row we've seen with the callsign W3IS, oldest first.

  • OBRADOVICH, JOHN W AZ
    1996-08-08 → cancelled 2005-04-09
  • HELSTEN, LANCE F UT
    2017-01-31 active
← Back to W3IS License history →