Arduino Superheterodyne Receiver

In this project, we will upgrade a traditional shortwave superheterodyne receiver with an Arduino base tuner. This tuner is capable of receiving shortwave broadcasts on 41m band and above.

This modularized receiver consists of a transistor base mixer, I.F amplifier, Si5351 clock generator, and an Arduino Uno board.

This video shows all the steps of this project including, soldering, wiring, and adjustments.

Additional details and all the project files including Arduino sketch are available at http://jayakody2000lk.blogspot.com/2021/10/arduino-superheterodyne-receiver.html.

Content of the video:

00:00 - I.F amplifier PCB, and soldering all the resistors
00:32 - Soldering all the capacitors
00:50 - Soldering 455kHz I.F transformers
01:10 - Soldering 2SC724 transistors
01:22 - Placing and soldering all the connectors
01:35 - Mixer and detector stage PCB, and soldering all the resistors
02:05 - Soldering all the capacitors
02:41 - Soldering inductors...
02:56 - Soldering 2SC724 transistor
03:04 - Soldering all the connectors
03:18 - Core modules of the superhet receiver
03:22 - Connecting I.F amplifier and mixer PCBs
04:45 - Connecting Si5351 module to the Arduino Uno board
05:00 - Connecting EC11 rotary encoder
05:32 - Connecting Si5351 module to the mixer PCB.
05:58 - Upload Arduino sketch into the Arduino Uno board
06:28 - Tunning I.F amplifier using RF signal generator
07:20 - Tunning on 25m band...
08:07 - Tunning on 22m band...
09:01 - Tunning on 19m band...

Видео Arduino Superheterodyne Receiver канала Dilshan's Electronics Lab