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

WB2O callsign genealogy

Currently held by ZYSOPOULOS, JOHN

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 WB2O's current licensee, walking backwards.

  1. WX9RTactive· E
    Lozon, Richard TAZgranted 2021-07-03
  2. K5RTLcancelled· E
    Lozon, Richard TAZgranted 2020-12-04cancelled 2021-07-03
  3. KJ7SDAcancelled· G
    Lozon, Richard TAZgranted 2020-11-12cancelled 2020-12-04

Successor callsigns

Callsigns held now by people who previously held WB2O.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign WB2O, oldest first.

  • ZYSOPOULOS, JOHN SC
    2003-07-30 → cancelled 2015-10-27
  • Croon, Gregory S OK
    2025-11-26 active
← Back to WB2O License history →