Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4DC callsign genealogy
Currently held by MOORE JR, WILLIAM C
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 WA4DC's current licensee, walking backwards.
- CLARK, DANIEL MKYgranted 2005-07-07cancelled 2011-11-15
Successor callsigns
Callsigns held now by people who previously held WA4DC.
- MOORE JR, WILLIAM CTXgranted 2020-01-04
All historical holders
Every license row we've seen with the callsign WA4DC, oldest first.
- MOORE JR, WILLIAM C TX2009-09-30 → cancelled 2009-10-27
- CLARK, DANIEL M KY2011-11-15 → cancelled 2023-11-16