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

KC9WHO callsign genealogy

Currently held by ADLAF, WILLIAM J

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 KC9WHO's current licensee, walking backwards.

  1. NQ9Uactive· E
    EIFERT, THOMAS AORgranted 2021-03-16
  2. AC9FPcancelled· E
    EIFERT, THOMAS AWIgranted 2013-07-20cancelled 2021-03-16
  3. NI7Vactive· E
    Gasik, Ryan JORgranted 2026-01-15
  4. KG7BBOcancelled· E
    Gasik, Ryan JORgranted 2013-02-07cancelled 2015-08-08

Successor callsigns

Callsigns held now by people who previously held KC9WHO.

No current licensee on record previously held this callsign.

← Back to KC9WHO License history →