Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4OX callsign genealogy
Currently held by Sizemore, Dennis R
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 AI4OX's current licensee, walking backwards.
- Sizemore, Dennis RKYgranted 2004-02-18cancelled 2006-03-22
Successor callsigns
Callsigns held now by people who previously held AI4OX.
No current licensee on record previously held this callsign.