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

K6OP callsign genealogy

Currently held by Silvester, Andrew 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 K6OP's current licensee, walking backwards.

  1. KC6Oactive· E
    koogler, russell lCAgranted 2020-07-28
  2. KJ6KKQcancelled· E
    koogler, russell lCAgranted 2010-09-21cancelled 2020-07-28

Successor callsigns

Callsigns held now by people who previously held K6OP.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K6OP, oldest first.

  • RASMUSSEN, RONALD N AZ
    2006-03-29 → cancelled 2018-06-19
  • Silvester, Andrew E CA
    2018-07-07 active