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

W1WHN callsign genealogy

Currently held by Erickson, Michael K

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 W1WHN's current licensee, walking backwards.

  1. WB1ARTactive· G
    Smolowitz, ArthurFLgranted 2021-05-22
  2. WA4ABDcancelled· G
    Smolowitz, ArthurFLgranted 2021-03-02cancelled 2021-05-22
  3. KO4LURcancelled· G
    Smolowitz, ArthurFLgranted 2021-02-01cancelled 2021-03-02

Successor callsigns

Callsigns held now by people who previously held W1WHN.

  1. W9CDYcancelled· T
    Erickson, Michael KMIgranted 2015-07-07cancelled 2021-01-29
← Back to W1WHN License history →