Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC9CSM callsign genealogy
Currently held by BONTRAGER, DARLTON L
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 KC9CSM's current licensee, walking backwards.
- BONTRAGER, DARLTON LINgranted 2002-11-15cancelled 2002-11-19
- KB9GVRno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KC9CSM.
No current licensee on record previously held this callsign.