uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K4LT callsign genealogy

Currently held by KLEIN, DOUGLAS 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 K4LT's current licensee, walking backwards.

  1. N4NNYcancelled· E
    Froehler, John MFLgranted 2020-03-10cancelled 2022-01-15
  2. KO4BZKcancelled· G
    Froehler, John MFLgranted 2020-02-18cancelled 2020-03-10

Successor callsigns

Callsigns held now by people who previously held K4LT.

  1. W4CWcancelled· E
    Jones, Lee JTNgranted 2019-12-27cancelled 2023-02-14
  2. AD8CWactive· E
    KLEIN, DOUGLAS LOHgranted 2017-11-14

All historical holders

Every license row we've seen with the callsign K4LT, oldest first.

  • KLEIN, DOUGLAS L OH
    2016-08-08 → cancelled 2017-11-14
  • Jones, Lee J TN
    2019-12-03 → cancelled 2019-12-27
  • Froehler, John M FL
    2022-01-15 active
← Back to K4LT License history →