Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9FRS callsign genealogy
Currently held by KOEHLER, PAUL 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 N9FRS's current licensee, walking backwards.
- Eller, Christopher EINgranted 2016-03-11cancelled 2019-09-10
Successor callsigns
Callsigns held now by people who previously held N9FRS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9FRS, oldest first.
- KOEHLER, PAUL J IN1992-02-04 → cancelled 2004-02-05
- Eller, Christopher E NY2019-09-10 active