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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. ...

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...

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!
...

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...

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...

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...

Read here: https://forum.pjrc.com/threads/70549-Amplitude-Modulation-(AM)-SDR-TX-for-Teensy-4-X-code-request

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

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...

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...

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...

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...