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

KN4JA callsign genealogy

Currently held by BLACKMAN, MIKE T

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 KN4JA's current licensee, walking backwards.

  1. N4UFJ
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held KN4JA.

  1. KV4FHcancelled· A
    Blackman, Mike TNCgranted 1993-08-24cancelled 2000-08-19
← Back to KN4JA License history →