uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KK4UM callsign genealogy

Currently held by JONES III, L FRANK

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 KK4UM's current licensee, walking backwards.

  1. K4UOMcancelled· E
    Good, Glen EFLgranted 2014-10-28cancelled 2015-02-18
  2. KM4DXWcancelled· G
    Good, Glen EFLgranted 2014-08-26cancelled 2014-10-28

Successor callsigns

Callsigns held now by people who previously held KK4UM.

  1. KA4Eactive· E
    Good, Glen EFLgranted 2025-06-14

All historical holders

Every license row we've seen with the callsign KK4UM, oldest first.

  • JONES III, L FRANK FL
    1987-12-08 → cancelled 1999-12-09
  • Good, Glen E FL
    2015-02-18 → cancelled 2015-06-13
← Back to KK4UM License history →