uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KV4FH 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 KV4FH's current licensee, walking backwards.

  1. KN4JAcancelled· A
    BLACKMAN, MIKE TNCgranted 1993-08-24cancelled 2000-07-25
  2. N4UFJ
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held KV4FH.

  1. NC4MBexpired· A
    Blackman, Michael TNCgranted 2010-06-11cancelled 2022-08-20
← Back to KV4FH License history →