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

KM4K callsign genealogy

Currently held by RUBIN, RICHARD 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 KM4K's current licensee, walking backwards.

  1. AD4WD
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held KM4K.

No current licensee on record previously held this callsign.

← Back to KM4K License history →