Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0MIO callsign genealogy
Currently held by MARSHALL, ROBERT 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 N0MIO's current licensee, walking backwards.
- MARLOW, RICHARD JMOgranted 2010-01-13cancelled 2012-09-13
Successor callsigns
Callsigns held now by people who previously held N0MIO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0MIO, oldest first.
- MARSHALL, ROBERT B CO2000-07-21 → cancelled 2012-08-08
- MARLOW, RICHARD J MO2022-08-23 active