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

K3ZL callsign genealogy

Currently held by CAMPBELL, KEITH A

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 K3ZL's current licensee, walking backwards.

  1. AE4TAactive· E
    Kirkham, Daniel AALgranted 2022-08-09
  2. KK4ZYNcancelled· E
    Kirkham, Daniel AALgranted 2014-04-07cancelled 2022-08-09

Successor callsigns

Callsigns held now by people who previously held K3ZL.

  1. AE4TAcancelled· E
    CAMPBELL, KEITH AALgranted 2019-02-09cancelled 2020-06-05
  2. AE4TAcancelled· E
    CAMPBELL, KEITH AALgranted 2015-03-13cancelled 2016-11-22
  3. AE4TAcancelled· E
    CAMPBELL, KEITH AALgranted 2010-04-16cancelled 2010-07-02

All historical holders

Every license row we've seen with the callsign K3ZL, oldest first.

  • CAMPBELL, KEITH A AL
    2006-12-05 → cancelled 2010-04-16
  • CAMPBELL, KEITH A AL
    2010-07-02 → cancelled 2015-03-13
  • CAMPBELL, KEITH A AL
    2016-11-22 → cancelled 2019-02-09
  • CAMPBELL, KEITH A AL
    2020-06-05 active
← Back to K3ZL License history →