Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9CNK callsign genealogy
Currently held by Clark, Crystal
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 K9CNK's current licensee, walking backwards.
- Clark, CrystalINgranted 2026-03-18cancelled 2026-04-07
Successor callsigns
Callsigns held now by people who previously held K9CNK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9CNK, oldest first.
- ZIMMERMAN, JON C TX2013-07-31 → cancelled 2026-03-06
- Clark, Crystal IN2026-04-07 active