DD4WH
Senior Member

fixed link: https://www.ap.com/blog/fft-spectrum-and-spectral-densities-same-data-different-scaling/

@Paul: your link is broken and seems to produce SPAM !?

@jonr: Ah, my fault: I was talking about underclocking from 150MHz up to 600MHz, that works properly! But setting it to > 600MHz with the Teensy Convolution SDR causes big problems, thats true! But its not confined to...

@jonr: no audio glitches here while changing CPU freq while audio is playing. I am using I2S audio with ADC PCM1808 and DAC PCM5102 with the Convolution SDR code.

Hi JayShoe ! excellent, just what I need ! I tried to participate in Kickstarter, but it did not work out, maybe because of problems with overseas credit cards / payment . . . it seems Kickstarter is not well...

@AC8GY, @KD9JCD, @DH1AKF: I will try to answer your questions below: Sorry for my late reply! Teensy Convolution SDR & T3.6: * I am afraid I ruined the T3.6 support in one of my last additions to the software *...

Hi Uli, very nice project, it would be great to have the Teensy generate accurate signals for phase and amlitude in order to drive a Class E polar transmitter! Generally, I think it is feasible with the Teensy...

@KD9JCD: sorry for the late answer: I will have to look at the new Teensyduino version, which could potentially make problems because of the SD lib change. So I still need some time to dive deeper into that. ...

Thanks a lot, Walter, for your quick response and the clarification! I misunderstood the MDEL parameter, which seems to be a compile time define and not (as I wrongly assumed) a parameter that is given over to the...

Hi Brian, nice to hear that you are still working with Teensy and SDR! As I wrote earlier in several posts in this forum: The twinpeak problem (problem of random order of samples at startup of several audio...

Hi Walter, after a long time, I tried to upload the software to a newly built recorder. However, it does not work any more. * it seems the triggered recording mode is always enabled * it is not possible to...

Hi Rudolf: no, there is no complete schematic / es gibt keinen kompletten Schaltplan. Its the very nature of the project that the Teensy Convolution SDR can cope with every I & Q input from many different frontends and...

maybe you would like to try to disable the digital highpass filter of the codec. This has caused trouble in other setups. Search the forum for the actual code line to do this. I am away from my PC, so cannot help with...