I am not sure I understand the feature being described. Are you planning on a video output direct to a monitor or are you planning on some kind of interface to a computer for display to a monitor via an application program (I am not sure of the performance demands for this though).
73, phil, K7PEH On May 15, 2011, at 9:05 AM, Alan Bloom wrote: >> According to N1AL, here are 468 active FFT bins. > > It's a little more complicated than that. The FFT is actually 1024 > points. The digital filter rolls off the edges, so the outer 20% of the > points are thrown away. The remaining 800 or so are then interpolated > to obtain the 468 display points. > > I think we'll probably go with a 2048-point FFT for the external display > to take advantage of the additional resolution. > > Alan N1AL > > > On Sun, 2011-05-15 at 08:25 -0700, Jim Brown wrote: >> On 5/15/2011 12:44 AM, Ian White GM3SEK wrote: >>> I came to the P3 from an SDR-IQ using a 15in second monitor [1], linked >>> to the K3 and N1MMLogger through LP-Bridge. For the moment, the much >>> tighter integration between the P3 and the K3 (particularly the tracking >>> cursors on*both* VFOs) overrides the need to peer at a small screen >>> that is lacking in detail. >> >> Before going too far down the trail about lacking detail, it's important >> to realize that resolution is also limited by the FFT parameters used >> to process the complex IF signal and convert it to the frequency >> display. According to N1AL, here are 468 active FFT bins. I haven't >> seen numbers for the frequency and time resolution of the FFT process, >> but the upper limit of frequency resolution is (F2-F1)/468. >> >> FWIW, I'm quite happy with the P3 display, and only wish it were smaller >> (that is, less depth front to rear) with a swiveling bracket to mount it >> to the underside of a shelf above my rig. >> >> 73, Jim K9YC >> ______________________________________________________________ >> 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 >> > > > ______________________________________________________________ > 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 ______________________________________________________________ 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
