Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4STI callsign genealogy
Currently held by GREER II, RICHARD L
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 N4STI's current licensee, walking backwards.
- GREER II, RICHARD LNCgranted 2024-07-18cancelled 2024-08-23
Successor callsigns
Callsigns held now by people who previously held N4STI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4STI, oldest first.
- FRICKER, RICHARD S KY1990-08-07 → cancelled 2002-08-08
- GREER II, RICHARD L NC2024-08-23 active