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

KT4H callsign genealogy

Currently held by CATES, JOE M

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 KT4H's current licensee, walking backwards.

  1. KK4CEVcancelled· E
    Collett, Jeremy LKYgranted 2011-05-20cancelled 2016-01-23

Successor callsigns

Callsigns held now by people who previously held KT4H.

  1. N4JRRactive· E
    ROBERTSON, JAMES RGAgranted 2023-12-23
  2. KT4JCactive· E
    CATES, JOE MTNgranted 2016-05-17
  3. N4JRRcancelled· E
    ROBERTSON, JAMES RGAgranted 2008-12-05cancelled 2010-08-20

All historical holders

Every license row we've seen with the callsign KT4H, oldest first.

  • CATES, JOE M TN
    2004-07-22 → cancelled 2006-07-21
  • ROBERTSON, JAMES R GA
    2008-08-29 → cancelled 2008-12-05
  • ROBERTSON, JAMES R GA
    2010-08-20 → cancelled 2014-01-04
  • Collett, Jeremy L KY
    2026-01-13 active
← Back to KT4H License history →