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

KC9D callsign genealogy

Currently held by Rosenau, Todd J

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 KC9D's current licensee, walking backwards.

  1. KW4XIcancelled· E
    Rosenau, Todd JVAgranted 2016-07-20cancelled 2016-12-13
  2. KM4VMJcancelled· E
    Rosenau, Todd JVAgranted 2016-07-20cancelled 2016-08-22

Successor callsigns

Callsigns held now by people who previously held KC9D.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KC9D, oldest first.

  • CALDWELL, LARRY E AL
    2004-10-15 → cancelled 2016-11-23
  • Rosenau, Todd J VA
    2016-12-13 active
← Back to KC9D License history →