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

AF9L callsign genealogy

Currently held by COOPER, WILLIAM R

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 AF9L's current licensee, walking backwards.

  1. N9BYSactive· T
    Schweiger, RyanWIgranted 2017-03-17
  2. KD9DBAcancelled· T
    Schweiger, RyanWIgranted 2015-02-25cancelled 2017-03-17

Successor callsigns

Callsigns held now by people who previously held AF9L.

  1. NU9DEactive· E
    COOPER, WILLIAM RINgranted 2017-01-04

All historical holders

Every license row we've seen with the callsign AF9L, oldest first.

  • COOPER, WILLIAM R IN
    1998-03-17 → cancelled 2007-03-02
  • SCHUMACHER, CARL E WI
    2021-07-14 active
← Back to AF9L License history →