Re: linker error when trying to use rational_resampler_base

Hi Dustin, Without knowing all of the details, I guess the FILTER component could be missing from CMakeLists.txt: set(GR_REQUIRED_COMPONENTS RUNTIME FILTER) More details in [1]. Cheers, Ernest [1] https://www.gnuradio.org/doc/doxygen/page_oot_config.html On Mon, Dec 2, 2019 at 6:40 PM

Re: [Discuss-gnuradio] debugging uhd_corr_and_sync example

Hi, I think this behaviour may be due to the level into the Polyphase Clock Sync block. The block expects a signal amplitude of 1 as explained in [1]. An AGC between the Correlate and Sync and the Polyphase Clock Sync blocks might do the trick. Cheers Ernest [1]

Re: [Discuss-gnuradio] Problem with tutorial

Hi, It could be that calls to set_ampl() and set_freq() are made before analog_sig_source_x_1 is declared. Try moving the signal source declarations to the top of the # Blocks section. Cheers, Ernest On Thu, Jul 12, 2018 at 12:14 AM, Sims, William Herb (MSFC-EV41) < herb.s...@nasa.gov> wrote:

Re: [Discuss-gnuradio] debugging for gnuradio DSP programming

Hi Linda, The argument to boost::format() might need to be checked. GR_LOG_DEBUG() is used in [1], for example. Cheers, Ernest [1] https://github.com/gnuradio/gnuradio/blob/493338d86d82e9 e10f5d9d4b42f2473b7275c7a2/gr-blocks/lib/test_tag_variable_r ate_ff_impl.cc#L80 On Wed, May 30, 2018 at

[Discuss-gnuradio] GRC Template Error

Hi, I installed GNU Radio v3.7.12.0-4-g67a2427 from source on Ubuntu 16.04.3 LTS. When I try to run blocks from some OOT modules, for example gr-pyqt, I get a template error when running the gr-pyqt table example: File ".../gr-pyqt/examples/table_test.py", line 75 self.my_table = Template

Re: [Discuss-gnuradio] Question on number of input items per work call

Hi Anil, You can fix the buffer size using the Min Output Buffer parameter (under the Advanced tab in your block, assuming you're using GRC). [image: Inline image 1] Regards, Ernest On Thu, Nov 16, 2017 at 1:56 PM, Anil Kumar Yerrapragada < yanilkumar2...@gmail.com> wrote: > Hi all > > > I

[Discuss-gnuradio] QAM Mod / Demod Blocks Deprecated?

Hi, The QAM Mod / Demod blocks are marked as deprecated. Is there a way to find more information on why they are obsolete? Given that they are deprecated, I guess there is a better alternative in GNU Radio to do the job performed by these blocks, but it is not immediately obvious to me. Thanks,

Re: [Discuss-gnuradio] Demodulation of Intermittent QAM Signal

to the AGC2 block since the QAM Demod block was originally implemented. Ernest On Thu, Oct 19, 2017 at 6:48 PM, E Fardin & P Le <fardi...@tpg.com.au> wrote: > > > > > - Original Message - > From: > "Kyeong Su Shin" <kss...@uw.edu> > > To: &

[Discuss-gnuradio] Demodulation of Intermittent QAM Signal

Hi, I have a simple QAM16 loopback (Gray code, diff encoding, 4 sps) working as follows: QAM Mod ---> Throttle ---> QAM Demod This works fine if I have a constant signal level from the Tx. However, if I add a variable gain between the Tx and Rx and drop the Tx level to zero, then restore the Tx