Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD9Y callsign genealogy
Currently held by Robbins, Michael 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 AD9Y's current licensee, walking backwards.
- Stevenson, Blake EWIgranted 2010-08-18cancelled 2011-05-10
Successor callsigns
Callsigns held now by people who previously held AD9Y.
- KELLY, MICHAEL EILgranted 2018-02-07
All historical holders
Every license row we've seen with the callsign AD9Y, oldest first.
- Robbins, Michael D IN2004-10-01 → cancelled 2009-01-24
- Stevenson, Blake E WI2021-04-06 active
- KELLY, MICHAEL E— → cancelled 1998-04-28