Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3ZX callsign genealogy
Currently held by HARRIS, DAVID E
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 W3ZX's current licensee, walking backwards.
- Gardone, Thomas APAgranted 2013-08-28cancelled 2014-08-15
Successor callsigns
Callsigns held now by people who previously held W3ZX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3ZX, oldest first.
- HARRIS, DAVID E PA2007-01-04 → cancelled 2012-07-25
- Gardone, Thomas A PA2024-08-03 active