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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

AB0OQ callsign genealogy

Currently held by HELFINSTINE, ALAN R

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 AB0OQ's current licensee, walking backwards.

  1. KI0KPcancelled· A
    HELFINSTINE, ALAN RMNgranted 1997-11-13cancelled 2000-08-23
  2. WB0QXCcancelled· G
    HELFINSTINE, ALAN Rcancelled 1997-11-13

Successor callsigns

Callsigns held now by people who previously held AB0OQ.

  1. WB0Qactive· E
    HELFINSTINE, ALAN RMOgranted 2020-08-04
← Back to AB0OQ License history →