Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0TU callsign genealogy
Currently held by Stewart, Michael D
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 N0TU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N0TU.
- GALCHUTT, STEPHEN MCOgranted 2019-02-26
All historical holders
Every license row we've seen with the callsign N0TU, oldest first.
- GALCHUTT, STEPHEN M CO2000-11-07 → cancelled 2009-03-10
- Stewart, Michael D KS2021-01-06 active