Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4DX callsign genealogy
Currently held by TUCKER, BRIAN K
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 WD4DX's current licensee, walking backwards.
- Tucker, Brian KGAgranted 2001-02-09cancelled 2008-11-29
Successor callsigns
Callsigns held now by people who previously held WD4DX.
- SLACK, ROBERT BNYgranted 2004-07-20cancelled 2016-07-21
All historical holders
Every license row we've seen with the callsign WD4DX, oldest first.
- SLACK, ROBERT B NY1997-04-08 → cancelled 2004-07-20
- TUCKER, BRIAN K GA2018-09-14 active