Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8BKM callsign genealogy
Currently held by HAMMOND, THOMAS S
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 K8BKM's current licensee, walking backwards.
- Gummere, Gregory ROHgranted 2020-02-10cancelled 2026-03-20
Successor callsigns
Callsigns held now by people who previously held K8BKM.
- HAMMOND, THOMAS SMIgranted 2021-12-28
All historical holders
Every license row we've seen with the callsign K8BKM, oldest first.
- HAMMOND, THOMAS S MI2018-10-30 → cancelled 2021-12-28
- Gummere, Gregory R OH2026-03-20 active