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

W4FBL callsign genealogy

Currently held by SAKOWICH, JOHN

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 W4FBL's current licensee, walking backwards.

  1. KX4WHcancelled· E
    SAKOWICH, JOHNTNgranted 2019-10-18cancelled 2022-06-07
  2. KC4UZTcancelled· E
    SAKOWICH, JOHNTNgranted 2019-10-18cancelled 2019-12-30
  3. KC2UZTcancelled· G
    SAKOWICH, JOHNTNgranted 2019-02-11cancelled 2019-10-18

Successor callsigns

Callsigns held now by people who previously held W4FBL.

No current licensee on record previously held this callsign.

← Back to W4FBL License history →