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

N9BUL callsign genealogy

Currently held by HEROLD, THOMAS E

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 N9BUL's current licensee, walking backwards.

  1. N9TOMactive· G
    Zurek, Tom SILgranted 2025-05-10
  2. K9ITZcancelled· G
    Zurek, Tom SILgranted 2023-10-11cancelled 2025-05-10
  3. KD9YXJcancelled· T
    Zurek, Tom SILgranted 2023-09-20cancelled 2023-10-11

Successor callsigns

Callsigns held now by people who previously held N9BUL.

  1. N9TOMcancelled· A
    HEROLD, THOMAS EWIgranted 2015-06-06cancelled 2023-04-21

All historical holders

Every license row we've seen with the callsign N9BUL, oldest first.

  • HEROLD, THOMAS E WI
    2012-12-05 → cancelled 2015-06-06
  • HEROLD, THOMAS E WI
    2023-04-21 active
← Back to N9BUL License history →