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

W4CB callsign genealogy

Currently held by Hacker, William 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 W4CB's current licensee, walking backwards.

  1. W4AAXactive· E
    THOMSON, PERRY DTNgranted 2026-08-12
  2. K6PERcancelled· E
    THOMSON, PERRY DTNgranted 2011-11-29cancelled 2016-10-15
  3. KJ6SBMcancelled· G
    Thomson, Perry DCAgranted 2011-10-19cancelled 2011-11-29

Successor callsigns

Callsigns held now by people who previously held W4CB.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W4CB, oldest first.

  • Hacker, William L AL
    2004-04-07 → cancelled 2012-08-12
  • Circle Creek Contest Club VA
    2024-08-13 active
← Back to W4CB License history →