Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4ZT callsign genealogy
Currently held by 3655 Technology Group
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 W4ZT's current licensee, walking backwards.
- KJ4VWIcancelled3655 Technology GroupGAgranted 2010-06-17cancelled 2010-12-10
Successor callsigns
Callsigns held now by people who previously held W4ZT.
- HARRISON JR, JAMES MALgranted 2020-10-14
All historical holders
Every license row we've seen with the callsign W4ZT, oldest first.
- RALSTON, GEORGE A FL1988-02-09 → cancelled 2000-02-10
- HARRISON JR, JAMES M NC2000-02-29 → cancelled 2000-10-17
- KING, UYLESS W GA2002-11-05 → cancelled 2009-02-08
- 3655 Technology Group GA2020-11-30 active