uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KS7O callsign genealogy

Currently held by BYDAL, BRYAN M

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 KS7O's current licensee, walking backwards.

  1. AC7DDactive· E
    DULL, DAVID RAZgranted 2020-02-08
  2. KK6JKCcancelled· E
    DULL, DAVID RAZgranted 2014-02-05cancelled 2020-02-08

Successor callsigns

Callsigns held now by people who previously held KS7O.

  1. W5MXactive· E
    BYDAL, BRYAN MKYgranted 2020-09-04

All historical holders

Every license row we've seen with the callsign KS7O, oldest first.

  • BYDAL, BRYAN M KY
    1998-02-03 → cancelled 2000-11-14
  • OTNES, SUZANNE M OR
    2023-09-29 active
← Back to KS7O License history →