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Confidence: Medium · Source: FCC ULS · As of 2026-09-15

W9TNC callsign genealogy

Currently held by GLAZKO, JOHN N

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 W9TNC's current licensee, walking backwards.

  1. KB8EQcancelled· A
    GLAZKO, JOHN NMIgranted 2018-11-06cancelled 2022-08-05

Successor callsigns

Callsigns held now by people who previously held W9TNC.

  1. KB8EQcancelled· A
    GLAZKO, JOHN NMIgranted 2018-11-06cancelled 2022-08-05

All historical holders

Every license row we've seen with the callsign W9TNC, oldest first.

  • GLAZKO, JOHN N MI
    2012-10-19 → cancelled 2018-11-06
  • GLAZKO, JOHN N MI
    2022-08-05 active
← Back to W9TNC License history →