Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8JMS callsign genealogy
Currently held by SIZEMORE, JAMES 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 K8JMS's current licensee, walking backwards.
- SIZEMORE, JAMES MOHgranted 2011-07-26cancelled 2011-10-12
Successor callsigns
Callsigns held now by people who previously held K8JMS.
- Snyder, James MWVgranted 2009-09-22cancelled 2021-09-23
All historical holders
Every license row we've seen with the callsign K8JMS, oldest first.
- Snyder, James M WV2003-01-24 → cancelled 2009-09-22
- SIZEMORE, JAMES M OH2021-08-20 active