Alan, Maybe this (low BDR) explains why the ‘7610 provides such a huge amount of user-selectable attenuation. I think it’s on the order of 45 dB.
Wayne N6KR ---- http://www.elecraft.com > On Dec 24, 2017, at 9:27 PM, Alan <n...@sonic.net> wrote: > ... > In my opinion, the best apples-to-apples comparison of direct-sampling and > superhet receivers is blocking dynamic range (BDR). It is a simple > measurement of the ratio between the strongest signal the receiver can handle > and the weakest signal it can hear. > > BDR tends to be limited by phase noise when the interfering signal is close > to the desired signal. This is not a measurement artifact but reflects > actual on-the-air performance. Direct-sampling receivers tend to have an > advantage close-in, although a superhet can also do well if the synthesizer > is carefully designed (for example the K3s :=) > > Alan N1AL >> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
