Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4KDI callsign genealogy
Currently held by Dial, David 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 W4KDI's current licensee, walking backwards.
- Dowler, KeithVAgranted 2012-11-30cancelled 2013-11-06
Successor callsigns
Callsigns held now by people who previously held W4KDI.
- Dial, David HTXgranted 2017-08-08
All historical holders
Every license row we've seen with the callsign W4KDI, oldest first.
- Dial, David H TX2004-08-21 → cancelled 2007-10-27
- Dowler, Keith VA2023-09-13 active