Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7SYS callsign genealogy
Currently held by KLUDT, JOHN 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 K7SYS's current licensee, walking backwards.
- KLUDT, JOHN RGAgranted 2011-11-18cancelled 2020-10-09
Successor callsigns
Callsigns held now by people who previously held K7SYS.
- KLUDT, JOHN RGAgranted 2011-11-18cancelled 2020-10-09
All historical holders
Every license row we've seen with the callsign K7SYS, oldest first.
- KLUDT, JOHN R GA2002-04-19 → cancelled 2011-11-18
- KLUDT, JOHN R ID2020-10-09 active