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

KM4KER callsign genealogy

Currently held by Makers Local 256

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 KM4KER's current licensee, walking backwards.

  1. KK4EARcancelled· G
    Arroyo Rivera, Edgardo JFLgranted 2022-10-25cancelled 2022-11-26
  2. KQ4DQIcancelled· T
    Arroyo Rivera, Edgardo JFLgranted 2022-10-07cancelled 2022-10-25

Successor callsigns

Callsigns held now by people who previously held KM4KER.

No current licensee on record previously held this callsign.

← Back to KM4KER License history →