Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4OT callsign genealogy
Currently held by SMITH, CHARLES 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 AI4OT's current licensee, walking backwards.
- Smith, Charles DVAgranted 2006-02-06cancelled 2006-03-13
Successor callsigns
Callsigns held now by people who previously held AI4OT.
No current licensee on record previously held this callsign.