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

W5SDL callsign genealogy

Currently held by London, Stephen D

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 W5SDL's current licensee, walking backwards.

  1. KF5SDLcancelled· G
    London, Stephen DLAgranted 2010-11-05cancelled 2010-11-28
  2. KF5HEFcancelled· G
    London, Stephen DLAgranted 2010-06-04cancelled 2010-11-05

Successor callsigns

Callsigns held now by people who previously held W5SDL.

  1. NO3Gactive· E
    London, Stephen DLAgranted 2022-10-08
← Back to W5SDL License history →