Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9TDM callsign genealogy
Currently held by HENNESSEY, JOHN 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 N9TDM's current licensee, walking backwards.
- MONTEE, TRACY DCAgranted 2010-03-10cancelled 2016-03-11
Successor callsigns
Callsigns held now by people who previously held N9TDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9TDM, oldest first.
- HENNESSEY, JOHN M IL1993-04-20 → cancelled 2005-04-21
- MONTEE, TRACY D CA2016-03-11 active