Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4SR callsign genealogy
Currently held by Thomas, Todd M
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 N4SR's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N4SR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4SR, oldest first.
- ROCK, STEPHEN C VA2000-12-16 → cancelled 2008-10-08
- Thomas, Todd M TN2020-09-12 active