Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3THC callsign genealogy
Currently held by Di Giulio, Marco
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 N3THC's current licensee, walking backwards.
- Di Giulio, MarcoILgranted 2022-08-23cancelled 2023-01-31
Successor callsigns
Callsigns held now by people who previously held N3THC.
All historical holders
Every license row we've seen with the callsign N3THC, oldest first.
- Ogden, Justin L PA2004-06-30 → cancelled 2004-07-09
- Di Giulio, Marco IL2023-01-31 → cancelled 2023-10-24