Confidence: Medium · Source: FCC ULS · As of 2026-09-11
KB9CSU callsign genealogy
Currently held by Chmura, Jerry 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 KB9CSU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KB9CSU.
- Chmura, Jerry JILgranted 2003-03-29cancelled 2003-12-12