Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI5KK callsign genealogy
Currently held by JOST, SEAN
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 KI5KK's current licensee, walking backwards.
- JOST, SEANTXgranted 2021-03-02cancelled 2021-03-26
Successor callsigns
Callsigns held now by people who previously held KI5KK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KI5KK, oldest first.
- HUDSON, WALTER R TX1999-02-26 → cancelled 2011-03-01
- JOST, SEAN TX2021-03-26 active