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

KT9TT callsign genealogy

Currently held by Tangwall, Richard

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 KT9TT's current licensee, walking backwards.

  1. K9YNYcancelled· E
    Tangwall, Richard AWIgranted 2015-12-29cancelled 2017-03-25
  2. KC9YNYcancelled· G
    Tangwall, Richard AWIgranted 2013-03-15cancelled 2015-12-29

Successor callsigns

Callsigns held now by people who previously held KT9TT.

  1. KT9RTactive· E
    Tangwall, RichardWIgranted 2023-05-09
← Back to KT9TT License history →