Not direct sampling if by that you mean an ADC at the antenna.
The KX3 downconverts the signals to baseband (audio range) with a pair of mixers that are operated 90 degrees out of phase, then converts the resulting mixer outputs to digital, then processes the digital signals for demodulation, filtering, etc.
The KX3 can also convert to 8kHz rather than baseband if needed, but the use of the roofing filter is not possible when that is used.
73, Don W3FPR On 1/28/2016 8:15 PM, J. Fielden wrote:
is the kx3 receiver RF direct sampling or ?
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