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

K4BW callsign genealogy

Currently held by SPRAGUE, WILLIAM A

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 K4BW's current licensee, walking backwards.

  1. KJ4TJEcancelled
    Eastern Shore Amateur Radio ClubVAgranted 2010-03-22cancelled 2010-04-30

Successor callsigns

Callsigns held now by people who previously held K4BW.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4BW, oldest first.

  • SPRAGUE, WILLIAM A VA
    2006-05-04 → cancelled 2010-03-12
  • Eastern Shore Amateur Radio Club VA
    2020-02-05 active
← Back to K4BW License history →