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

K6SO callsign genealogy

Currently held by Brigaerts, Paul L

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 K6SO's current licensee, walking backwards.

  1. KQ6GQcancelled· E
    Brigaerts, Paul LCAgranted 1996-05-28cancelled 2005-07-06
  2. KF6CXB
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held K6SO.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K6SO, oldest first.

  • RIDDERHOF, DAVID M VA
    1998-07-07 → cancelled 1999-10-12
  • Brigaerts, Paul L FL
    2026-04-14 active