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

K6JFO callsign genealogy

Currently held by O'Brien, John 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 K6JFO's current licensee, walking backwards.

  1. AF6ZWcancelled· E
    O' Brien, John FCAgranted 2010-08-20cancelled 2010-11-02
  2. KJ6KDVcancelled· E
    O' Brien, John FCAgranted 2010-08-20cancelled 2010-10-13

Successor callsigns

Callsigns held now by people who previously held K6JFO.

No current licensee on record previously held this callsign.

← Back to K6JFO License history →