Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3JDM callsign genealogy
Currently held by GRAF, GEORGE J
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 N3JDM's current licensee, walking backwards.
- MCCABE, JAMES DMDgranted 2007-06-04cancelled 2007-06-22
Successor callsigns
Callsigns held now by people who previously held N3JDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3JDM, oldest first.
- GRAF, GEORGE J PA1993-12-21 → cancelled 2005-12-22
- MCCABE, JAMES D MD2017-04-04 active