uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-11

KB4YY callsign genealogy

Currently held by SMITH, EDWARD 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 KB4YY's current licensee, walking backwards.

  1. KB4AAAactive· E
    Barker, Billy JKYgranted 2025-04-19
  2. KM4JCGcancelled· G
    Barker, Billy JKYgranted 2015-03-23cancelled 2015-04-17

Successor callsigns

Callsigns held now by people who previously held KB4YY.

  1. W4CJMactive· E
    SMITH, EDWARD LNCgranted 2025-06-26

All historical holders

Every license row we've seen with the callsign KB4YY, oldest first.

  • CHAMBERLAIN, RALPH E VA
    1997-05-19 → cancelled 2009-05-20
  • SMITH, EDWARD L NC
    2011-01-11 → cancelled 2015-06-26
← Back to KB4YY License history →