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

K6UL callsign genealogy

Currently held by COTTERILL, JOHN K

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 K6UL's current licensee, walking backwards.

  1. K1YUactive· E
    Sloane, Christopher ANHgranted 2016-08-30
  2. K1FOOcancelled· E
    Sloane, Christopher ANHgranted 2002-07-23cancelled 2006-09-19
  3. KB1IDTcancelled· T
    SLOANE, CHRISTOPHER ANHgranted 2002-04-08cancelled 2002-07-23

Successor callsigns

Callsigns held now by people who previously held K6UL.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K6UL, oldest first.

  • KWIETNIEWSKI, MITCHELL Z CA
    1995-07-06 → cancelled 2000-09-01
  • COTTERILL, JOHN K CA
    2024-06-11 active
← Back to K6UL License history →