Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9CJS callsign genealogy
Currently held by Sundstrom, Charles 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 N9CJS's current licensee, walking backwards.
- Sundstrom, Charles JILgranted 2007-04-11cancelled 2009-06-13
Successor callsigns
Callsigns held now by people who previously held N9CJS.
No current licensee on record previously held this callsign.