Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3TDM callsign genealogy
Currently held by PENROD, GARRY E
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 N3TDM's current licensee, walking backwards.
- Morris, Tyler DPAgranted 2007-08-10cancelled 2014-06-03
Successor callsigns
Callsigns held now by people who previously held N3TDM.
- PENROD, GARRY EMDgranted 2010-05-04cancelled 2019-12-23
All historical holders
Every license row we've seen with the callsign N3TDM, oldest first.
- PENROD, GARRY E MD1995-05-10 → cancelled 2000-06-06
- Morris, Tyler D PA2024-06-08 active