[Elecraft] K3S (SDR/superhet hybrid) vs. entry-level direct-sampling radios

[Lynn W. Taylor, WB6UUT]

Wayne,

How much resolution is available (how many bits per sample) in the 
typical modern A/D converter used in an IC-7300 or Flex?

73 -- Lynn

On 7/30/2017 9:14 AM, Wayne Burdick wrote:
> The K3S, an SDR/superhet hybrid, includes narrowband protection of its A-to-D converters in the form of roofing filters (crystal filters). This is fundamentally different from the approach taken by direct-sampling radios, which have only very broadband filtering ahead of their ADCs. Typically, front-end band-pass filters are 0.5 to 4 MHz wide. Their ADCs will be impacted by all strong signals in this range, alone and in summation.