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

KF1O callsign genealogy

Currently held by Franklin, Ken

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 KF1O's current licensee, walking backwards.

  1. KK4YYDcancelled· E
    Clement, Dac JFLgranted 2014-03-06cancelled 2014-08-05

Successor callsigns

Callsigns held now by people who previously held KF1O.

  1. W1KENactive· E
    Franklin, KenFLgranted 2019-12-30
  2. KP4ECcancelled· E
    Ruiz, Enrique (Carlos)MAgranted 2012-07-14cancelled 2013-05-10
  3. KY0Ccancelled· E
    READ, ROBERT MHIgranted 2004-05-21cancelled 2012-12-29

All historical holders

Every license row we've seen with the callsign KF1O, oldest first.

  • Franklin, Ken RI
    2004-01-06 → cancelled 2010-03-23
  • Ruiz, Enrique (Carlos) PR
    2012-06-08 → cancelled 2012-07-14
  • Clement, Dac "Phil" J ME
    2024-11-05 active
← Back to KF1O License history →