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

KS4UN callsign genealogy

Currently held by CORLEY, FRANK 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 KS4UN's current licensee, walking backwards.

  1. KU4Zactive· E
    BLEDSOE, MICHAEL DNCgranted 2020-12-11
  2. KD4QZAcancelled· E
    BLEDSOE, MICHAEL DGAgranted 2002-05-16cancelled 2011-02-15

Successor callsigns

Callsigns held now by people who previously held KS4UN.

  1. KU4Jactive· E
    CORLEY, FRANK JALgranted 2019-03-12
  2. KU4Zcancelled· E
    CORLEY, FRANK JALgranted 2006-08-26cancelled 2009-01-27

All historical holders

Every license row we've seen with the callsign KS4UN, oldest first.

  • CORLEY, FRANK J OK
    2004-01-22 → cancelled 2006-08-26
  • CORLEY, FRANK J AL
    2009-01-27 → cancelled 2009-03-17
← Back to KS4UN License history →