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

WB0ESY callsign genealogy

Currently held by HAYOSTEK, MARVIN 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 WB0ESY's current licensee, walking backwards.

  1. WD7BDcancelled· E
    Denker, Bryce AAZgranted 2019-12-04cancelled 2023-08-08
  2. AD7ROcancelled· E
    Denker, Bryce AAZgranted 2002-03-01cancelled 2009-12-29
  3. N0SPPcancelled· E
    Denker, Bryce AAZgranted 2002-03-01cancelled 2007-12-28

Successor callsigns

Callsigns held now by people who previously held WB0ESY.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign WB0ESY, oldest first.

  • HAYOSTEK, MARVIN J IA
    1994-02-01 → cancelled 2003-01-12
  • Denker, Bryce A AZ
    2023-08-08 active
← Back to WB0ESY License history →