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

N6LSP callsign genealogy

Currently held by CLAUS, JAMES 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 N6LSP's current licensee, walking backwards.

  1. KD5UJYcancelled· G
    Claus, James ETXgranted 2002-11-19cancelled 2008-04-08

Successor callsigns

Callsigns held now by people who previously held N6LSP.

  1. W5MSactive· G
    Claus, James EFLgranted 2024-05-03

All historical holders

Every license row we've seen with the callsign N6LSP, oldest first.

  • MONAHAN, HARRY E CA
    1995-03-16 → cancelled 2007-03-17
  • CLAUS, JAMES E FL
    2018-01-23 → cancelled 2024-05-03