NEWSDR 2024 on Friday May 31 at WPI in Worcester, MA, USA

The New England Workshop on Software Defined Radio (NEWSDR) is being held at Worcester Polytechnic Institute (WPI) on Friday May 31, in Worcester, Massachusetts, USA. There will also be a tutorial session on the evening before on Thursday May 30. The event is free, but advance registration is req

Re: Debugging Existing C++ Blocks with VS Code & GDB

Thanks Walter I realized that I had multiple gnuradio versions installed even though I thought I checked that. I completely wiped all my gnu radio files, pulled in the latest version 3.10.10.0 and built using the -DCMAKE_BUILD_TYPE=Debug, and now I can successfully debug the existing DTV code. The

Transmitting a waveform, and recording input, at an adjustable rep rate

I'm trying to use GNU Radio to build a test/measurement rig. At a user-defined interval I want to perform two actions: 1) Transmit an FM sweep with user definable properties like frequency 2) And record to a file for a fixed duration. For the transmitter I was able to adapt the demo case for th

Re: Transmitting a waveform, and recording input, at an adjustable rep rate

You might have luck modifying this tutorial. Understanding XMLRPC Blockswiki.gnuradio.orgThis gives you the ability to change parameters via a separate python script where simple logic may be easier to implement. Not precise timing, but simple. On Apr 29, 2024, at 14:16, Jameson C

Re: Transmitting a waveform, and recording input, at an adjustable rep rate

Interesting, thanks, I'll check that out. And no, I don't need precise timing control. If I do have to do this with Python I might copy the data counting example in the Python Block wiki and connect the message output to the Message To Variable block which could be used to set the state of the re

Re: Rational resample before FFT, and FFT rate

It sounds to me as if you're trying to move the signal to the center of a FFT bin so that you don't have to deal with scalloping loss. Is that correct? If so, I strongly recommend that you skip all of this resampling and just use a "flattop" window in the FFT. That will allow you to measure the

Re: Rational resample before FFT, and FFT rate

Hi Gary -- Thanks for getting back to me. Maybe I can explain better what I'm doing. The data is 16 ksps complex IQ centered at 50.080 MHz. The target signal is an essentially unmodulated CW carrier about 427 below that. I have about 8 hours of recorded data to analyze. Ultimately I want