Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8JAM callsign genealogy
Currently held by Kieselbach, Douglas P
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 K8JAM's current licensee, walking backwards.
- Kieselbach, Douglas PMIgranted 2019-05-16cancelled 2020-05-01
Successor callsigns
Callsigns held now by people who previously held K8JAM.
- James, JosephPAgranted 2018-04-10
All historical holders
Every license row we've seen with the callsign K8JAM, oldest first.
- James, Joseph PA2018-03-24 → cancelled 2018-04-10
- Kieselbach, Douglas P MI2020-05-01 active