Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9TT callsign genealogy
Currently held by HOWE, DON R
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 K9TT's current licensee, walking backwards.
- Shigeno, AkiyoshiCAgranted 2010-03-12cancelled 2010-03-30
Successor callsigns
Callsigns held now by people who previously held K9TT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9TT, oldest first.
- HOWE, DON R IN2001-03-22 → cancelled 2007-09-18
- Shigeno, Akiyoshi CA2020-04-07 active