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

K5KTO callsign genealogy

Currently held by HILL Sr., MARK J

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 K5KTO's current licensee, walking backwards.

  1. W1OKCcancelled· T
    HILL Sr., MARK JOKgranted 2012-09-18cancelled 2021-10-09
  2. K7GPDcancelled· T
    HILL Sr., MARK JAZgranted 2007-06-19cancelled 2012-09-18

Successor callsigns

Callsigns held now by people who previously held K5KTO.

  1. N7KOLactive
    Dusty Trailers Amateur Radio ClubUTgranted 2021-12-30

All historical holders

Every license row we've seen with the callsign K5KTO, oldest first.

  • Dusty Trailers Amateur Radio Club UT
    2010-05-01 → cancelled 2011-06-14
  • HILL Sr., MARK J OK
    2021-10-09 active
← Back to K5KTO License history →