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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

W5TWA callsign genealogy

Currently held by COBB, BENNY

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 W5TWA's current licensee, walking backwards.

  1. KI5TWAcancelled· G
    Shannon, Mark ATXgranted 2021-01-15cancelled 2022-10-22
  2. KI5MHUcancelled· G
    Shannon, Mark ATXgranted 2020-12-01cancelled 2021-01-15

Successor callsigns

Callsigns held now by people who previously held W5TWA.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W5TWA, oldest first.

  • COBB, BENNY OK
    1997-02-20 → cancelled 2003-10-22
  • BENNETT, ROBERT C TX
    2010-10-02 → cancelled 2022-10-04
  • Shannon, Mark A TX
    2022-10-22 active
← Back to W5TWA License history →