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

W4TBI callsign genealogy

Currently held by Baker Jr, Charles P

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 W4TBI's current licensee, walking backwards.

  1. KQ4TBIcancelled· E
    Baker Jr, Charles PTNgranted 2024-04-27cancelled 2025-03-08
  2. KQ4QFJcancelled· T
    Baker Jr, Charles PTNgranted 2024-03-23cancelled 2024-04-27

Successor callsigns

Callsigns held now by people who previously held W4TBI.

  1. AF4BNactive· E
    BLANKENSHIP, MICHAEL GKYgranted 2023-02-17

All historical holders

Every license row we've seen with the callsign W4TBI, oldest first.

  • BLANKENSHIP, MICHAEL G KY
    2021-10-13 → cancelled 2023-02-17
  • Baker Jr, Charles P TN
    2025-03-08 active
← Back to W4TBI License history →