Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9JDM callsign genealogy
Currently held by SIMON, PAUL D
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 K9JDM's current licensee, walking backwards.
- MARTIN, JOHN DILgranted 2016-07-15cancelled 2017-11-28
Successor callsigns
Callsigns held now by people who previously held K9JDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9JDM, oldest first.
- SIMON, PAUL D IL2005-05-26 → cancelled 2017-06-27
- MARTIN, JOHN D WI2017-11-28 active