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

WX9RT callsign genealogy

Currently held by Croon, Gregory S

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 WX9RT's current licensee, walking backwards.

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

Successor callsigns

Callsigns held now by people who previously held WX9RT.

  1. WB2Oactive· E
    Croon, Gregory SOKgranted 2025-11-26

All historical holders

Every license row we've seen with the callsign WX9RT, oldest first.

  • Croon, Gregory S SC
    2015-09-15 → cancelled 2015-11-14
  • Lozon, Richard T AZ
    2021-07-03 active
← Back to WX9RT License history →