Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9FOI callsign genealogy
Currently held by SANTAQUILANI, FRANK 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 KA9FOI's current licensee, walking backwards.
- Santaquilani, Frank EINgranted 2015-11-30cancelled 2016-03-08
Successor callsigns
Callsigns held now by people who previously held KA9FOI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA9FOI, oldest first.
- SANTAQUILANI, FRANK E IN1995-02-10 → cancelled 2007-02-13
- Santaquilani, Frank E IN2026-05-19 active