Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0TYU callsign genealogy
Currently held by GRUBB, JOHN 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 N0TYU's current licensee, walking backwards.
- LOCKE, PAULAMOgranted 2017-04-19cancelled 2017-06-27
Successor callsigns
Callsigns held now by people who previously held N0TYU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0TYU, oldest first.
- GRUBB, JOHN M KS1992-08-18 → cancelled 2004-08-19
- LOCKE, PAULA MO2017-06-27 active