Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8JKM callsign genealogy
Currently held by McDowell, Jason K
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 W8JKM's current licensee, walking backwards.
- McDowell, Jason KOHgranted 2018-03-29cancelled 2018-06-29
Successor callsigns
Callsigns held now by people who previously held W8JKM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8JKM, oldest first.
- CERVEN, MICHAEL R MI1988-08-30 → cancelled 2000-09-01
- McDowell, Jason K OH2018-06-29 active