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

KZ5RF callsign genealogy

Currently held by CARLSON, RONALD F

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 KZ5RF's current licensee, walking backwards.

  1. KF6YKactive· A
    CARLSON, RONALD FCAgranted 2021-10-08

Successor callsigns

Callsigns held now by people who previously held KZ5RF.

  1. KF6YKactive· A
    CARLSON, RONALD FCAgranted 2021-10-08
  2. KF6YKcancelled· A
    CARLSON, RONALD FCAgranted 2020-04-10cancelled 2021-02-23

All historical holders

Every license row we've seen with the callsign KZ5RF, oldest first.

  • CARLSON, RONALD F CA
    2016-03-02 → cancelled 2020-04-10
  • CARLSON, RONALD F CA
    2021-02-23 → cancelled 2021-10-08
← Back to KZ5RF License history →