Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN0PWR callsign genealogy
Currently held by Pfeffer, Jason 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 KN0PWR's current licensee, walking backwards.
- Pfeffer, Jason DINgranted 2022-09-13cancelled 2023-03-28
Successor callsigns
Callsigns held now by people who previously held KN0PWR.
No current licensee on record previously held this callsign.