On May 19, 2014, at 6:11 PM, Eric Ross <[email protected]> wrote: > If you are referring to the span it is 200Khz. > > http://www.elecraft.com/P3/p3.htm
Correct. The K3 is a superhet transceiver with narrow ham-band filtering in the front end (averaging about 500 kHz, varying with band). This reduces out-of-band interference to the P3 panadapter, which is tapped in just after the mixer. A view 200 kHz wide is about the most needed for typical operating scenarios. This width is also consistent with the narrowest of the band-pass filters. A direct-sampling SDR can view a wider swath of the band for the same reason that it has 15-20 dB lower blocking dynamic range than a well-designed superhet: the A-to-D converter is not protected by narrow filtering. 73, Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
