Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9MKK callsign genealogy
Currently held by CLARK, RAY A
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 K9MKK's current licensee, walking backwards.
- CLARK, TIMOTHY CINgranted 2018-12-10cancelled 2019-02-05
Successor callsigns
Callsigns held now by people who previously held K9MKK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9MKK, oldest first.
- CLARK, RAY A IN1994-05-17 → cancelled 2006-05-18
- CLARK, TIMOTHY C IN2019-02-05 active