Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4XX callsign genealogy
Currently held by Arroyo, Jose M
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 AI4XX's current licensee, walking backwards.
- COLCLOUGH, DOUGLAS DVAgranted 2008-11-18cancelled 2015-03-10
Successor callsigns
Callsigns held now by people who previously held AI4XX.
All historical holders
Every license row we've seen with the callsign AI4XX, oldest first.
- Arroyo, Jose M FL2006-11-16 → cancelled 2008-04-04
- COLCLOUGH, DOUGLAS D VA2015-03-10 → cancelled 2021-08-23