Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N8TDM callsign genealogy
Currently held by Marks, Alexander 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 N8TDM's current licensee, walking backwards.
- Marks, Alexander JMIgranted 2020-08-06cancelled 2024-04-19
Successor callsigns
Callsigns held now by people who previously held N8TDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N8TDM, oldest first.
- KENYON, DANIEL A OH1994-12-30 → cancelled 2004-04-15
- Marks, Alexander J MI2024-04-19 active