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

K4SPS callsign genealogy

Currently held by SULLIVAN SR, STEPHEN P

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 K4SPS's current licensee, walking backwards.

  1. KN4SPScancelled· T
    SULLIVAN SR, STEPHEN PSCgranted 2018-07-31cancelled 2019-12-06
  2. KN4NUUcancelled· T
    SULLIVAN SR, STEPHEN PSCgranted 2018-07-13cancelled 2018-07-31

Successor callsigns

Callsigns held now by people who previously held K4SPS.

  1. K2KYactive· E
    Snyder, Steven PKYgranted 2020-06-10

All historical holders

Every license row we've seen with the callsign K4SPS, oldest first.

  • GILLETTE SR, JOSEPH E VA
    1994-01-04 → cancelled 1999-09-20
  • Snyder, Steven P KY
    2007-05-01 → cancelled 2010-08-13
  • SULLIVAN SR, STEPHEN P SC
    2019-12-06 active
← Back to K4SPS License history →