Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9ATF callsign genealogy
Currently held by WAMSER, JOHN P
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 N9ATF's current licensee, walking backwards.
- ELROD, LOUIS EILgranted 2021-02-16cancelled 2021-07-09
Successor callsigns
Callsigns held now by people who previously held N9ATF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9ATF, oldest first.
- WAMSER, JOHN P WI1995-03-08 → cancelled 2006-01-19
- ELROD, LOUIS E IL2021-07-09 active