2023-09-22 — Revisiting the KM6LYW Radio DigiPi Project, My Letter to ARRL Regarding Elimination of Symbol Rate from US Amateur Radio Regulations, Latest AREDN Updates
The information in your article concerning the limitations of NPR due to symbol restraints is incorrect, in order to achieve full speed (470kbps) with NPR, you need to consume an entire 1Mhz of spectral width, not 100khz, at 100khz NPR is restricted to 68kbps @ 50kSps. My source is this document https://cdn.hackaday.io/files/1640927020512128/NPR70_introduction_EN_v3.6.pdf (Just for the sake of accuracy)
The information in your article concerning the limitations of NPR due to symbol restraints is incorrect, in order to achieve full speed (470kbps) with NPR, you need to consume an entire 1Mhz of spectral width, not 100khz, at 100khz NPR is restricted to 68kbps @ 50kSps. My source is this document https://cdn.hackaday.io/files/1640927020512128/NPR70_introduction_EN_v3.6.pdf (Just for the sake of accuracy)