Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9USN callsign genealogy
Currently held by Glennon, Patrick J
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 N9USN's current licensee, walking backwards.
- Glennon, Patrick JGAgranted 2015-05-13cancelled 2015-10-02
Successor callsigns
Callsigns held now by people who previously held N9USN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9USN, oldest first.
- COTTON, THOMAS E IN2003-06-10 → cancelled 2015-09-15
- Glennon, Patrick J TN2026-01-27 active