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

AI0X callsign genealogy

Currently held by CHAPPELL, CARL 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 AI0X's current licensee, walking backwards.

  1. NA0AIcancelled· E
    Black Wolf, Robert WTXgranted 2004-05-04cancelled 2006-08-08
  2. KK5KIcancelled· A
    BLACK WOLF, ROBERT WTXgranted 1999-03-17cancelled 2004-05-04

Successor callsigns

Callsigns held now by people who previously held AI0X.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AI0X, oldest first.

  • CHAPPELL, CARL J KS
    1994-03-29 → cancelled 2006-03-30
  • Black Wolf, Robert W TX
    2016-07-25 active
← Back to AI0X License history →