Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8CMJ callsign genealogy
Currently held by Johns, Craig M
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 K8CMJ's current licensee, walking backwards.
- Johns, Craig MOHgranted 2023-08-08cancelled 2023-08-29
Successor callsigns
Callsigns held now by people who previously held K8CMJ.
- Johnson, James RILgranted 2011-12-10cancelled 2020-03-31
All historical holders
Every license row we've seen with the callsign K8CMJ, oldest first.
- Johnson, James R IL2009-05-05 → cancelled 2011-12-10
- Johns, Craig M OH2023-08-29 active