Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9PJO callsign genealogy
Currently held by Coates, Andrew
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 N9PJO's current licensee, walking backwards.
- Coates, AndrewWIgranted 2018-04-23cancelled 2019-10-12
Successor callsigns
Callsigns held now by people who previously held N9PJO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9PJO, oldest first.
- COATES, ANDREW W J WI1992-05-19 → cancelled 2004-05-20
- Coates, Andrew WI2019-10-12 active