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Type: Posts; User: stefanodi

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  1. Teensy 4.0 Sdr radio receiver A.M. Demodulation problem

    Hi, I made a receiver for HF bands with Teensy 4.0 and https://github.com/chipaudette/OpenAudio_ArduinoLibrary
    For SSB & FM reception no problem, I have to solve the amplitude modulated reception. ...
  2. Very good! With this I closed and solved the AM...

    Very good!
    With this I closed and solved the AM transmission problem with Teensy 4.0, 16 Bit 44.1 Khz audio sampling system.

    Dear Bob, I have tried your 32bit 96Khz system and it works very...
  3. Ciao everyone, I have attached the photo of the...

    Ciao everyone,
    I have attached the photo of the best solution to eliminate the harmonics generated (on I & Q Mixer, Tx out) by the IF_FREQ 11025.0
    If anyone has any better ideas... Great!
    ...
  4. Thanks Ron for the reply (We know you for good...

    Thanks Ron for the reply (We know you for good QCX SDR!) :) .
    With my friend Giampietro (IK3MAX, the designer of the RTX mixer board) we are also testing your proposals.
    For the moment we don't...
  5. Hi Bob, I'm back online! I am attaching the...

    Hi Bob, I'm back online!
    I am attaching the schematic of the RTX card in high resolution.
    The AM modulator works well, only it gives me the problem you see in the second photo, @ RF output, it...
  6. SDR A.M. Transmitter on I Q Mixer board RF harmonic problem

    Hi, after solving the code to generate the amplitude modulation in a radio transmitter (thanks again Bob!), Now I ask for help to solve the problem of the harmonic generated by the 11025Khz...
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    "Easy" SDR hf transceiver "SOLVED"

    Read here: https://forum.pjrc.com/threads/70549-Amplitude-Modulation-(AM)-SDR-TX-for-Teensy-4-X-code-request
  8. Great! Now it's really good! I think, some other...

    Great! Now it's really good! I think, some other RADIO NOSTALGIC :rolleyes: will be happy. Thanks again Bob!:o
    Stefano.
  9. Thanks again Bob for your availability. I tried...

    Thanks again Bob for your availability.
    I tried the code and the Amplitude Modulation and it works. :)
    However, it functions as a controlled carrier.
    Only in the presence of an incoming audio...
  10. Thanks Bob for the reply. The project is based...

    Thanks Bob for the reply.
    The project is based on an RTX type I & Q mixer card.
    I would like to build an "old style" RTX, without many controls and easy to build, but ALL SDR.
    My problem is...
  11. Amplitude Modulation (AM) SDR TX for Teensy 4.X code request

    Hello everybody. A friend told me I was wrong and they didn't understand the question in my previous post.
    I write my request for help in another way:
    is it possible to have a code for Teensy 4.X...
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    "Easy" SDR hf transceiver

    Hi everyone, I recently discovered Teensy 4.0 ... Wonderful! My idea is to create an "easy-to-build" HF SDR RTX. For the moment, without many filters and particular functions... I made an SDR RX PART...
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