Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN9W callsign genealogy
Currently held by BIRCHFIELD II, JOSEPH D
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 KN9W's current licensee, walking backwards.
- BIRCHFIELD II, JOSEPH DTNgranted 2015-01-06cancelled 2018-06-26
Successor callsigns
Callsigns held now by people who previously held KN9W.
- SCHNEIDER, TERRANCE WGAgranted 2026-04-21
All historical holders
Every license row we've seen with the callsign KN9W, oldest first.
- HUFFORD, CURT J WI2004-04-06 → cancelled 2016-04-07
- SCHNEIDER, TERRANCE W GA2016-04-26 → cancelled 2016-06-07
- BIRCHFIELD II, JOSEPH D TN2018-06-26 active