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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K4SUL callsign genealogy

Currently held by SULLIVAN, RONALD 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 K4SUL's current licensee, walking backwards.

  1. KM4SULcancelled· G
    SULLIVAN, RONALD ANCgranted 2014-07-25cancelled 2015-03-28
  2. KM4CWDcancelled· T
    SULLIVAN, RONALD ANCgranted 2014-07-04cancelled 2014-07-25

Successor callsigns

Callsigns held now by people who previously held K4SUL.

No current licensee on record previously held this callsign.

← Back to K4SUL License history →