Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4TDI callsign genealogy
Currently held by SANDERS, RONALD F
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 N4TDI's current licensee, walking backwards.
- Trotta, Christopher PWVgranted 2019-12-20cancelled 2020-01-17
Successor callsigns
Callsigns held now by people who previously held N4TDI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4TDI, oldest first.
- SANDERS, RONALD F TN2001-09-11 → cancelled 2013-09-12
- Trotta, Christopher P WV2020-01-17 active