Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4TRJ callsign genealogy
Currently held by Clark, David R
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 W4TRJ's current licensee, walking backwards.
- CLARK, DAVID RGAgranted 2013-03-22cancelled 2013-04-09
Successor callsigns
Callsigns held now by people who previously held W4TRJ.
- JACOBS, TED RALgranted 2020-06-09
All historical holders
Every license row we've seen with the callsign W4TRJ, oldest first.
- GATTI, MARIO J FL1995-10-24 → cancelled 2007-10-25
- JACOBS, TED R TN2008-08-15 → cancelled 2010-07-24
- Clark, David R GA2023-02-28 active