Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4YD callsign genealogy
Currently held by Michael, Phillip B
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 AI4YD's current licensee, walking backwards.
- Michael, Phillip BFLgranted 2002-03-27cancelled 2007-05-10
Successor callsigns
Callsigns held now by people who previously held AI4YD.
- Michael, Phillip BFLgranted 2019-02-14