Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0ROS callsign genealogy
Currently held by MACKENZIE, DAVID B
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 N0ROS's current licensee, walking backwards.
- Ross, JonathanNEgranted 2019-04-11cancelled 2022-05-21
Successor callsigns
Callsigns held now by people who previously held N0ROS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0ROS, oldest first.
- MACKENZIE, DAVID B CO1992-03-17 → cancelled 2004-03-18
- Ross, Jonathan C NE2022-05-21 active