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RF 433 MHz Transmit Audio with Arduino - YouTube
https://www.youtube.com/watch?v=lxWyAZ7h-TM
Close-range 433 MHz audio tone transmission using Uno and Nano microcontrollers, 8-ohm speaker, and Arduino ToneMelody sketch: https://www.arduino.cc/en/Tuto...
Sending Audio with a 433 MHz AM data transmitter - …
https://www.youtube.com/watch?v=4leNjynR0DM
In response to experiments carried out by Peter (VK3YE) with 433 MHz data transmitter modules for use with audio and voice (see https://www.youtube.com/watch...
What is 433 MHz? Smart Home Radio Frequency …
https://homey.app/en-us/wiki/433-mhz/
433 MHz is a wireless radio band on which compatible household devices send signals. While TVs use infrared light for handling remote control signals, 433 MHz radio waves enable communication with home devices such as motorized blinds from Somfy, KlikAanKlikUit sensors, or socket switches from LightwaveRF.
Audio Transmitter and Receiver with 433Mhz RF Modules ...
https://forum.arduino.cc/t/audio-transmitter-and-receiver-with-433mhz-rf-modules/361569
This PWM signal is a digital signal we can now transfer using those generic 433MHz modules. Obivously because of the low transfer rate, we can only use a modulating frequency of (I tested and found working) around 10kHz. Therefore the audio quality is bad, but certainly enough for voice. With 10kHz, I even got a range of more then 100m!
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