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

K4OBY callsign genealogy

Currently held by BECKER, LEONARD T

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 K4OBY's current licensee, walking backwards.

  1. WJ4Eactive· E
    Olvesen, Jeffrey MFLgranted 2021-05-07
  2. KG4CAMcancelled· E
    Olvesen, Jeffrey MFLgranted 2020-09-09cancelled 2021-05-07
  3. KJ4CKRcancelled· G
    Olvesen, Jeffrey MFLgranted 2017-12-13cancelled 2020-09-09

Successor callsigns

Callsigns held now by people who previously held K4OBY.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4OBY, oldest first.

  • HALL JR, JAMES G VA
    1998-04-28 → cancelled 2010-04-29
  • BECKER, LEONARD T SC
    2019-04-16 active
← Back to K4OBY License history →