Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4ATO callsign genealogy
Currently held by Okrahead Ham Radio Group
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 KD4ATO's current licensee, walking backwards.
- KE5KSIcancelledOkrahead Ham Radio GroupMSgranted 2006-10-03cancelled 2008-07-12
Successor callsigns
Callsigns held now by people who previously held KD4ATO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4ATO, oldest first.
- SITES, GRACIELA J FL1997-03-24 → cancelled 2005-04-21
- Okrahead Ham Radio Group MS2018-04-25 active