Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK9TT callsign genealogy
Currently held by GRANT, JOSEPH J
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 KK9TT's current licensee, walking backwards.
- GRANT, JOSEPH JILgranted 1999-05-13cancelled 2002-02-27
Successor callsigns
Callsigns held now by people who previously held KK9TT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK9TT, oldest first.
- GRANT, JOSEPH J IL2002-02-01 → cancelled 2002-02-04
- GRANT, JOSEPH J FL2022-01-08 active