Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0RBT callsign genealogy
Currently held by Calkins, Ray G
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 N0RBT's current licensee, walking backwards.
- Calkins, Ray GNMgranted 2003-10-29cancelled 2010-09-18
Successor callsigns
Callsigns held now by people who previously held N0RBT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0RBT, oldest first.
- GREEN, PAMELA S MO1993-03-30 → cancelled 2005-03-31
- Calkins, Ray G NM2020-09-18 active