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

AI3F callsign genealogy

Currently held by KRUPA, HERMAN 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 AI3F's current licensee, walking backwards.

  1. AK4DEactive· E
    Santos, DennisMSgranted 2017-09-09
  2. KJ5DENcancelled· E
    Santos, DennisMSgranted 2017-06-06cancelled 2017-09-09
  3. KG5TGZcancelled· T
    Santos, DennisMSgranted 2017-05-17cancelled 2017-06-06

Successor callsigns

Callsigns held now by people who previously held AI3F.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AI3F, oldest first.

  • KRUPA, HERMAN J FL
    2004-05-03 → cancelled 2006-01-03
  • JACOCKS, WESLEY A VA
    2021-10-29 active
← Back to AI3F License history →