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

WB0OK callsign genealogy

Currently held by HARSHBARGER, THOMAS W

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 WB0OK's current licensee, walking backwards.

  1. AI0Factive· E
    Sakabe, JunCOgranted 2020-08-07
  2. W0JUNcancelled· E
    Sakabe, JunCOgranted 2020-07-10cancelled 2020-08-07
  3. KF0APNcancelled· G
    Sakabe, JunCOgranted 2020-06-22cancelled 2020-07-10

Successor callsigns

Callsigns held now by people who previously held WB0OK.

  1. W9PHactive· E
    RABIN, DAVID NILgranted 2021-01-06
  2. KD0FCcancelled· E
    Harshbarger, TomMOgranted 2018-08-04cancelled 2019-12-21

All historical holders

Every license row we've seen with the callsign WB0OK, oldest first.

  • RABIN, DAVID N IL
    1999-05-25 → cancelled 2001-03-27
  • HARSHBARGER, THOMAS W MO
    2018-07-17 → cancelled 2018-08-04
← Back to WB0OK License history →