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

W9FV callsign genealogy

Currently held by SULLIVAN, KILIAN R

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 W9FV's current licensee, walking backwards.

  1. WO6Yactive· E
    Koch, Michael CCAgranted 2020-02-28
  2. KA6MCKcancelled· E
    Koch, Michael CCAgranted 2019-09-21cancelled 2020-02-28
  3. KM6VNGcancelled· G
    Koch, Michael CCAgranted 2018-09-04cancelled 2019-09-21

Successor callsigns

Callsigns held now by people who previously held W9FV.

  1. K7CLcancelled· E
    Backey, Paul CAZgranted 2015-12-26cancelled 2022-09-01
  2. W7SWScancelled· E
    Backey, Paul CAZgranted 2015-03-20cancelled 2015-11-24

All historical holders

Every license row we've seen with the callsign W9FV, oldest first.

  • SULLIVAN, KILIAN R IN
    1994-03-29 → cancelled 2006-03-30
  • Backey, Paul C AZ
    2006-04-18 → cancelled 2015-03-20
  • Backey, Paul C AZ
    2015-11-24 → cancelled 2015-12-26
  • Climaco, Eugene CA
    2018-01-17 active
← Back to W9FV License history →