Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9GJN callsign genealogy
Currently held by Niles, Gregory 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 K9GJN's current licensee, walking backwards.
- Niles, Gregory JWIgranted 2009-02-20cancelled 2012-11-06
Successor callsigns
Callsigns held now by people who previously held K9GJN.
- Niles, Gregory JWIgranted 2009-02-20cancelled 2012-11-06
All historical holders
Every license row we've seen with the callsign K9GJN, oldest first.
- Niles, Gregory J WI2009-02-20 → cancelled 2012-10-16
- Niles, Gregory J WI2022-09-23 active