Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4TRI callsign genealogy
Currently held by German, Fred 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 N4TRI's current licensee, walking backwards.
- SPADA JR, FRANCIS ONCgranted 2018-08-24cancelled 2020-07-07
Successor callsigns
Callsigns held now by people who previously held N4TRI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4TRI, oldest first.
- SMITH, ROBERT E FL1988-10-25 → cancelled 2000-10-26
- German, Fred J AL2006-01-10 → cancelled 2018-01-11
- SPADA JR, FRANCIS NC2020-07-07 active