Can you give a little primer on using that PLL tracking? I would love to use that to just track carriers random frequencies. For instance 10mhz. Ultimately I want to track and periodically log and offset from true predicted frequency. Like every 10 seconds.
Bill Dailey Negativity always wins the short game. But positivity wins the long game. - Gary Vaynerchuk Don’t be easy to understand, Be impossible to misunderstand - Steve Sims > On Oct 28, 2019, at 9:27 AM, Barry Duggan <[email protected]> wrote: > > Hi Albin and Volker, > > I added a PLL Carrier Tracking block to take care of the tuning problem. See > the revised https://wiki.gnuradio.org/index.php/File:FunCube_AM.png > > Albin, that 'spike' is the carrier! This is AM ;) > > Thank you both for your suggestions. > --- > Barry Duggan KV4FV > > >> On 2019-10-27 07:13, Albin Stigö wrote: >> Hi Barry, >> Some thoughts: >> You have a large DC spike at the center, try using the frequency xlating >> fir filter to tune an offset frequency. >> Why don't you decimate at the channel filter? >> Try observing the signal at various points using the frequency sink. >> Good luck, >> Albin SM6WJM >>> On Sat, Oct 26, 2019, 21:02 Barry Duggan <[email protected]> wrote: >>> Hi, >>> I've been working on a gnuradio AM broadcast receiver, and have found >>> that the tuning is very critical to obtaining clear audio. My flowgraph >>> can be seen at https://wiki.gnuradio.org/index.php/File:FunCube_AM.png. >>> Are there any alternate demodulation methods which are not so sensitive >>> to exact tuning? >>> Thanks, >>> -- >>> Barry Duggan KV4FV >
