uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

W4GRX callsign genealogy

Currently held by Koshko, Travis

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 W4GRX's current licensee, walking backwards.

  1. W3TJKcancelled· G
    Koshko, TravisVAgranted 2016-07-15cancelled 2024-04-16
  2. KK4EDWcancelled· T
    Koshko, Travis JVAgranted 2011-09-16cancelled 2016-07-15

Successor callsigns

Callsigns held now by people who previously held W4GRX.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W4GRX, oldest first.

  • JONES JR, HUBERT C GA
    1996-06-18 → cancelled 2008-06-19
  • Koshko, Travis VA
    2024-04-16 active
← Back to W4GRX License history →