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

KK4EMS callsign genealogy

Currently held by BARBOZA, ALFREDO

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 KK4EMS's current licensee, walking backwards.

  1. KG4TKFcancelled· G
    BARBOZA, ALFREDONCgranted 2012-08-15cancelled 2013-12-17

Successor callsigns

Callsigns held now by people who previously held KK4EMS.

  1. NO6MXactive· E
    DE CRAEMER, MARTIN AVAgranted 2021-09-14

All historical holders

Every license row we've seen with the callsign KK4EMS, oldest first.

  • DE CRAEMER, MARTIN A VA
    2011-10-04 → cancelled 2011-11-18
  • BARBOZA, ALFREDO NC
    2023-12-13 active
← Back to KK4EMS License history →