Tom, OK I got it fixed after looking at your link. See diagram below:
https://dl.dropboxusercontent.com/u/49570443/test.grc_fixed.png I was using the Delay block to give me a 65 sample delay to account for the delay in the Hilbert. This will not work as I assume there is more delay in the Hilbert than just the 65 taps. The real output of the Hilbert is a properly delayed version of the input, so I replaced the delay with that. It now works well What's shown in the diagram is LSB though, not USB. Thanks, Lou KD4HSO On Feb 16, 2014, at 11:19 AM, Tom McDermott <tom.mcdermo...@yahoo.com> wrote: > Hi Lou - the diagram you sent isn't going to perform a single-signal > conversion. > Taking just the real part of the received signal (and throwing away the > imaginary part) > gets rid of information that distinguishes negative frequency components from > positive frequency components. After that point there is no possibility to > separate out > the LSB components from the USB components. > > You will need a bit more complicated design, I've used the following > configuration for > implementing a phasing type receiver. There are other ways as well, the > Weaver method, > and a filter method (using complex taps to a filter). > > http://www.tapr.org/~n5eg/index_files/DCC_2013_Gnuradio_Presentation%20-%20Rev%205.pdf > > Look at about slide 14. > > -- Tom, N5EG > > > > > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
