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

KA9F callsign genealogy

Currently held by Baldwin Jr, John L

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 KA9F's current licensee, walking backwards.

  1. AJ6PEcancelled· E
    Tolan, John CCAgranted 2020-06-26cancelled 2020-09-01

Successor callsigns

Callsigns held now by people who previously held KA9F.

  1. WE9Ncancelled· E
    Baldwin Jr, John LINgranted 2006-02-04cancelled 2007-04-10

All historical holders

Every license row we've seen with the callsign KA9F, oldest first.

  • Baldwin Jr, John L IN
    2002-03-07 → cancelled 2006-02-04
  • Prior Jr, Charles I IL
    2008-08-12 → cancelled 2020-08-13
  • Tolan, John C CA
    2020-09-01 active
← Back to KA9F License history →