Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4ACE callsign genealogy
Currently held by RILEY, THOMAS J
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 KA4ACE's current licensee, walking backwards.
- RILEY, THOMAS JSCgranted 2020-09-29cancelled 2023-06-22
Successor callsigns
Callsigns held now by people who previously held KA4ACE.
- DAVIS, CLIFFORDNCgranted 2015-03-03cancelled 2016-07-09
All historical holders
Every license row we've seen with the callsign KA4ACE, oldest first.
- DAVIS, CLIFFORD NC2005-03-08 → cancelled 2015-03-03
- RILEY, THOMAS J SC2023-06-22 active