Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AA8TW callsign genealogy
Currently held by RUTKOWSKI, JOSEPH
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 AA8TW's current licensee, walking backwards.
- Chou, Shou ChenMIgranted 2018-10-15cancelled 2018-11-03
Successor callsigns
Callsigns held now by people who previously held AA8TW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA8TW, oldest first.
- RUTKOWSKI, JOSEPH MI1995-06-14 → cancelled 2007-06-15
- Chou, Shou Chen MI2018-11-03 active