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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K4KO callsign genealogy

Currently held by Folkerts, Herman L

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 K4KO's current licensee, walking backwards.

  1. WN4Mactive· E
    Nutt Jr, Larry ENCgranted 2018-05-01
  2. N4NXXcancelled· E
    Nutt Jr, Larry ENCgranted 2016-11-15cancelled 2018-05-01
  3. KM4YPFcancelled· T
    Nutt Jr, Larry ENCgranted 2016-10-27cancelled 2016-11-15

Successor callsigns

Callsigns held now by people who previously held K4KO.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4KO, oldest first.

  • Folkerts, Herman L FL
    1999-02-10 → cancelled 2002-02-16
  • Tomerlin, Greg A TN
    2023-12-12 active
← Back to K4KO License history →