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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

AD4M callsign genealogy

Currently held by SUTTON, HOWARD R

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 AD4M's current licensee, walking backwards.

  1. KF4SUcancelled· E
    SUTTON, BENJAMIN WFLgranted 2020-12-29cancelled 2025-07-08
  2. K0SUactive· E
    Checkush, James RCOgranted 2023-01-18
  3. KE0DNLcancelled· E
    Checkush, James RCOgranted 2015-03-17cancelled 2023-01-18

Successor callsigns

Callsigns held now by people who previously held AD4M.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AD4M, oldest first.

  • SUTTON, HOWARD R FL
    2021-09-22 → cancelled 2024-11-13
  • SUTTON, BENJAMIN W FL
    2025-07-08 active
← Back to AD4M License history →