uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K0RU callsign genealogy

Currently held by ATKINSON, WILMER E

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 K0RU's current licensee, walking backwards.

  1. W8YRBcancelled· E
    UNDERWOOD, ROBERT DKSgranted 2001-01-09cancelled 2006-05-23
  2. WB8YRBcancelled· E
    UNDERWOOD, ROBERT DMIgranted 1997-07-28cancelled 2001-01-09

Successor callsigns

Callsigns held now by people who previously held K0RU.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K0RU, oldest first.

  • ATKINSON, WILMER E CO
    1995-02-06 → cancelled 1995-02-09
  • UNDERWOOD, ROBERT D CA
    2026-07-02 active