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

K0IFR callsign genealogy

Currently held by HAMMERSMITH, BERNARD J

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 K0IFR's current licensee, walking backwards.

  1. KC0CBCexpired
    Community Blood Center Amateur Radio ClubMOgranted 2010-11-13cancelled 2022-11-15
  2. KD0MRNcancelled
    Community Blood Center Amateur Radio ClubMOgranted 2010-09-14cancelled 2010-11-13

Successor callsigns

Callsigns held now by people who previously held K0IFR.

No current licensee on record previously held this callsign.

← Back to K0IFR License history →