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

K1YU callsign genealogy

Currently held by Sloane, Christopher A

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 K1YU's current licensee, walking backwards.

  1. K1FOOcancelled· E
    Sloane, Christopher ANHgranted 2002-07-23cancelled 2006-09-19
  2. KB1IDTcancelled· T
    SLOANE, CHRISTOPHER ANHgranted 2002-04-08cancelled 2002-07-23

Successor callsigns

Callsigns held now by people who previously held K1YU.

  1. K6ULactive· E
    COTTERILL, JOHN KCAgranted 2024-06-11

All historical holders

Every license row we've seen with the callsign K1YU, oldest first.

  • COTTERILL, JOHN K CA
    2004-06-29 → cancelled 2004-08-03
  • Sloane, Christopher A NH
    2016-08-30 active
← Back to K1YU License history →