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

WB4SCW callsign genealogy

Currently held by RUDOLPH, JOHN 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 WB4SCW's current licensee, walking backwards.

  1. KD7RDYcancelled· G
    RUDOLPH, JOHN SINgranted 2020-02-01cancelled 2026-06-19
  2. KB7RDYcancelled· G
    RUDOLPH, JOHN SKYgranted 2020-01-14cancelled 2020-02-01
  3. KO4ASFcancelled· T
    RUDOLPH, JOHN SKYgranted 2019-12-26cancelled 2020-01-14

Successor callsigns

Callsigns held now by people who previously held WB4SCW.

No current licensee on record previously held this callsign.

← Back to WB4SCW License history →