Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4DDK callsign genealogy
Currently held by HORTON, WILLIAM H
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 WA4DDK's current licensee, walking backwards.
- HORTON, CYNTHIA GSCgranted 2003-07-30cancelled 2013-09-04
Successor callsigns
Callsigns held now by people who previously held WA4DDK.
- HORTON, WILLIAM HSCgranted 2010-04-10cancelled 2018-10-22
All historical holders
Every license row we've seen with the callsign WA4DDK, oldest first.
- HORTON, WILLIAM H SC1993-10-19 → cancelled 2000-07-07
- HORTON, CYNTHIA G SC2013-09-04 → cancelled 2025-09-05