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

KK6OCS callsign genealogy

Currently held by Henderson, Mark B

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 KK6OCS's current licensee, walking backwards.

The current licensee has not held any other callsign on record.

Successor callsigns

Callsigns held now by people who previously held KK6OCS.

  1. KA6YXIactive· E
    Henderson, Mark BCAgranted 2024-08-31