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

WN4OAA callsign genealogy

Currently held by KOSMAK, JOHN G

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 WN4OAA's current licensee, walking backwards.

  1. KF9Nactive· E
    Scanlon, Brian JILgranted 2021-04-29
  2. K9RQYcancelled· E
    Scanlon, Brian JILgranted 2006-04-21cancelled 2011-07-19
  3. W9BJScancelled· E
    STROTHER JR, BERNARD JAZgranted 2018-08-07cancelled 2021-05-28
  4. KD9ERAcancelled· E
    STROTHER JR, BERNARD JINgranted 2015-10-01cancelled 2018-08-07

Successor callsigns

Callsigns held now by people who previously held WN4OAA.

  1. W3IKexpired· E
    KOSMAK, JOHN GTNgranted 2007-07-31cancelled 2019-08-01
← Back to WN4OAA License history →