Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NT0I callsign genealogy
Currently held by MILLER, MARVIN 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 NT0I's current licensee, walking backwards.
- MILLER, MARVIN MCOgranted 2007-03-20cancelled 2008-07-15
Successor callsigns
Callsigns held now by people who previously held NT0I.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NT0I, oldest first.
- BARTHOLOMEW, LESLIE E MO1996-03-26 → cancelled 2008-03-27
- MILLER, MARVIN M CO2018-06-30 active