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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KK6CRO callsign genealogy

Currently held by Radwanski, Kyle C

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 KK6CRO's current licensee, walking backwards.

  1. KK6CSGcancelled· E
    Radwanski, Kyle CCAgranted 2019-03-16cancelled 2023-01-21
  2. KI6YJVcancelled· G
    Radwanski, Kyle CCAgranted 2009-04-14cancelled 2013-03-04

Successor callsigns

Callsigns held now by people who previously held KK6CRO.

  1. WA9ATFactive· E
    O'Connor, Donald RCAgranted 2015-03-13

All historical holders

Every license row we've seen with the callsign KK6CRO, oldest first.

  • O'Connor, Donald R CA
    2013-03-01 → cancelled 2015-03-13
  • Radwanski, Kyle C CA
    2023-01-21 active
← Back to KK6CRO License history →