Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ACH callsign genealogy
Currently held by JONES, WILLIAM D
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 K4ACH's current licensee, walking backwards.
- Tiller Jr, Louis SFLgranted 2010-04-21cancelled 2015-07-21
Successor callsigns
Callsigns held now by people who previously held K4ACH.
- JONES, WILLIAM DGAgranted 2020-09-03
All historical holders
Every license row we've seen with the callsign K4ACH, oldest first.
- JONES, WILLIAM D GA1997-03-21 → cancelled 2000-11-14
- Tiller Jr, Louis S FL2025-04-29 → cancelled 2026-08-11