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

WC9U callsign genealogy

Currently held by Shannon Hon, Robert J

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 WC9U's current licensee, walking backwards.

  1. KC9OYUcancelled· E
    Shannon, Robert JWIgranted 2009-01-21cancelled 2009-04-10

Successor callsigns

Callsigns held now by people who previously held WC9U.

  1. W4CWDcancelled· E
    O LESEK, JOHN PALgranted 2016-03-30cancelled 2024-07-06

All historical holders

Every license row we've seen with the callsign WC9U, oldest first.

  • O LESEK, JOHN P IN
    2003-12-23 → cancelled 2006-06-20
  • Shannon Hon, Robert J WI
    2019-04-19 active
← Back to WC9U License history →