Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6ZEM callsign genealogy
Currently held by Matherly, James T
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 K6ZEM's current licensee, walking backwards.
- Matherly, James TORgranted 2017-10-10cancelled 2017-10-31
Successor callsigns
Callsigns held now by people who previously held K6ZEM.
- COOK, JAMES HORgranted 2003-06-03cancelled 2015-06-04
All historical holders
Every license row we've seen with the callsign K6ZEM, oldest first.
- COOK, JAMES H CA1996-11-05 → cancelled 2003-06-03
- Matherly, James T OR2017-10-31 active