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

K9WSS callsign genealogy

Currently held by SPERLING, WILLIAM S

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 K9WSS's current licensee, walking backwards.

  1. WA9YHXactive· E
    SPERLING, ROBYN MILgranted 2017-09-09
  2. KB9WLVcancelled· E
    SPERLING, ROBYN MILgranted 2000-06-09cancelled 2007-07-27

Successor callsigns

Callsigns held now by people who previously held K9WSS.

  1. W9WSSactive· E
    SPERLING, WILLIAM SILgranted 2017-01-31
← Back to K9WSS License history →