Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0ST callsign genealogy
Currently held by Keller, Dale A
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 AC0ST's current licensee, walking backwards.
- Keller, Dale ACOgranted 2009-09-09cancelled 2010-07-07
Successor callsigns
Callsigns held now by people who previously held AC0ST.
No current licensee on record previously held this callsign.