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

KD4BP callsign genealogy

Currently held by POSTON, 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 KD4BP's current licensee, walking backwards.

  1. KD4NOXcancelled· E
    Poston, William LSCgranted 2021-10-01cancelled 2022-09-30
  2. KO4SRUcancelled· E
    POSTON, BILLSCgranted 2021-07-12cancelled 2021-10-01
  3. KO4RUIcancelled· G
    Poston, BillSCgranted 2021-07-12cancelled 2021-08-19

Successor callsigns

Callsigns held now by people who previously held KD4BP.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KD4BP, oldest first.

  • PATTON, FREDERICK W MS
    2006-02-28 → cancelled 2018-03-01
  • POSTON, William L SC
    2022-09-30 active
← Back to KD4BP License history →