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

K7SD callsign genealogy

Currently held by COLLIER, RICHARD 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 K7SD's current licensee, walking backwards.

  1. K7FAZcancelled· E
    SCAGLIONE, FRANKAZgranted 2023-07-18cancelled 2024-01-26
  2. KK7NFJcancelled· T
    SCAGLIONE, FRANK AAZgranted 2023-06-27cancelled 2023-07-18

Successor callsigns

Callsigns held now by people who previously held K7SD.

  1. AI7KRactive· E
    VanderMeulen, Aaron HORgranted 2020-08-07
  2. K6VVactive· E
    COLLIER, RICHARD ECAgranted 2018-07-17

All historical holders

Every license row we've seen with the callsign K7SD, oldest first.

  • BERTALAN, STEVE OR
    2006-11-28 → cancelled 2012-03-21
  • COLLIER, RICHARD E CA
    2014-04-11 → cancelled 2018-07-17
  • VanderMeulen, Aaron H OR
    2020-08-07 → cancelled 2022-01-05
  • Scaglione, Frank AZ
    2024-01-26 active
← Back to K7SD License history →