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

N0CK callsign genealogy

Currently held by HENDERSON, ROBERT 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 N0CK's current licensee, walking backwards.

  1. N4RWHcancelled· E
    HENDERSON, ROBERT WFLgranted 2021-03-09cancelled 2025-01-11
  2. KD4CXcancelled· E
    HENDERSON, ROBERT WFLgranted 2019-07-02cancelled 2021-03-09
  3. NT4Zactive· E
    MANCOS, STEPHEN JNCgranted 2021-07-24
  4. KN4HPJcancelled· E
    MANCOS, STEPHEN JNCgranted 2017-11-14cancelled 2021-07-24

Successor callsigns

Callsigns held now by people who previously held N0CK.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign N0CK, oldest first.

  • LILIENTHAL, HAROLD R CO
    2012-09-25 → cancelled 2024-12-24
  • HENDERSON, ROBERT W FL
    2025-01-11 active
← Back to N0CK License history →