Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7TO callsign genealogy
Currently held by KRESS, RONALD E
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 AD7TO's current licensee, walking backwards.
- KRESS, RONALD EORgranted 2005-01-22cancelled 2008-04-21
Successor callsigns
Callsigns held now by people who previously held AD7TO.
No current licensee on record previously held this callsign.