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

KT9L callsign genealogy

Currently held by BLACKER JR, ALLEN 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 KT9L's current licensee, walking backwards.

  1. N9MSBcancelled· G
    GERK, WILLIAM HOKgranted 2019-08-06cancelled 2020-10-27
  2. N5WHGactive· G
    GERK, WILLIAM HOKgranted 2020-10-27

Successor callsigns

Callsigns held now by people who previously held KT9L.

  1. W9ALBexpired· E
    BLACKER JR, ALLEN PILgranted 1998-06-10cancelled 2010-06-11

All historical holders

Every license row we've seen with the callsign KT9L, oldest first.

  • Drake, Larry M IN
    2025-08-05 active
  • BLACKER JR, ALLEN P
    — → cancelled 1998-06-10
← Back to KT9L License history →