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

W4JRT callsign genealogy

Currently held by Thomas, Russell 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 W4JRT's current licensee, walking backwards.

  1. WB4JRTcancelled· G
    THOMPSON, JOHN RFLgranted 2010-11-30cancelled 2010-12-21
  2. K7JRTactive· E
    Trott, James RWAgranted 2017-02-04
  3. KI7JAYactive· T
    Biggs, Jay AWAgranted 2020-12-29
  4. KJ7SWNcancelled· T
    Biggs, Jay AWAgranted 2020-12-10cancelled 2020-12-29

Successor callsigns

Callsigns held now by people who previously held W4JRT.

  1. KV4Sactive· E
    Thomas, RussellALgranted 2022-04-07

All historical holders

Every license row we've seen with the callsign W4JRT, oldest first.

  • Thomas, Russell J AL
    2002-03-08 → cancelled 2002-06-22
  • Thompson, John R FL
    2020-11-20 active
← Back to W4JRT License history →