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

W8CTO callsign genealogy

Currently held by OLIVER, CLIFFORD T

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 W8CTO's current licensee, walking backwards.

  1. KA8ALEcancelled· G
    HARNOCZ, ALEXOHgranted 2017-04-07cancelled 2018-11-17
  2. KE8GJOcancelled· T
    HARNOCZ, ALEXOHgranted 2017-03-15cancelled 2017-04-07

Successor callsigns

Callsigns held now by people who previously held W8CTO.

  1. K4CTOactive· G
    OLIVER, CLIFFORD TFLgranted 2019-01-01

All historical holders

Every license row we've seen with the callsign W8CTO, oldest first.

  • OLIVER, CLIFFORD T FL
    2008-08-19 → cancelled 2009-02-28
  • Harnocz Mr, Alex OH
    2018-11-17 active
← Back to W8CTO License history →