Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1RO callsign genealogy
Currently held by Tenenbaum, David 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 N1RO's current licensee, walking backwards.
- Tenenbaum, David MMAgranted 2019-03-13cancelled 2022-05-13
Successor callsigns
Callsigns held now by people who previously held N1RO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1RO, oldest first.
- FLEMING, LAWRENCE G MA2016-09-15 → cancelled 2020-04-24
- Tenenbaum, David M MA2022-05-13 active