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

KS4YL callsign genealogy

Currently held by HEATH, LEX A

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 KS4YL's current licensee, walking backwards.

  1. KD4ZSO
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held KS4YL.

  1. WY0MNcancelled· A
    HEATH, LEX AWYgranted 2011-03-01cancelled 2013-12-31
← Back to KS4YL License history →