Update

Version 1.0C : Available in stock

Added:

• extra pads for AM/FM input

• I2C pads

• extra pads I/O

What is it?

This listing is for the Printed circuit board and Instructions.

All parts are widely available -

The kit consits of the printed circuit boards and the instruction Manual which includes the schematic and parts list.

Radio is based around the SI4735-D60-GU chip and is controlled by the nodemcu esp32-s module. A 2.4 or 2.8" tft touch lcd is connected to this setup. Frequency is controlled by the rotary encoder and all inputs and outputs are on the daughter pcb facing backwards. Radio features are controlled by the touchscreen.

Worldwide FM band support (64–108 MHz)

Worldwide AM band support (520–1710 kHz)

SW band support (Si4734/35 and Si4730-D60) (2.3–30 MHz)

LW band support (Si4734/35 and Si4730-D60) (150–510 kHz)

Excellent real-world performance

Automatic frequency control (AFC)

Automatic gain control (AGC)

Digital FM stereo decoder R.D.S

Advanced Audio Processing - Digital Signal Processing

Seven selectable AM channel filters

AM/FM/SW/LW digital tuning

Stereo and Signal Indication

Fully customizable firmware thanks to the Arduino IDE. A big Appreciation goes to Bernard Binns for re writing the front end & Ricardo for writing the library.

Uses an ESP32 WROVER S - upload a new firmware with the usb port located on the rear of the board.

Can be powered with a battery pack - with rear charging socket

Touch Screen buttons - to control the radio functions Volume +/-, Band +/-, Mode SSB/LSB/USB, Step, Bandwidth , Bfo/Vfo, Setup, Mode, Seek, Scan, Light Brightness, Chip Info, Radio Info, Mute, Retro Mode.

Bandwidth change control range 500 Hz to 4 kHz - ideal for noise rejection

Step tuning in four ranges 1,5,10,25

Rear BNC Connector for External Antenna

Rear connector 3.5MM for Stereo Headphones and Speakers

Auto Mute Audio clip when powered on (Remove Big Thump from the speaker)

Battery Status Voltage on Main Screen - can be switched off in setup

Stereo TDA2822 Audio Amp on board

Rear Latching Power Switch

Front layout PCB with TFT LCD Display and Touch screen and Rotary Encoder measuring 139 x 87 mm

Rear Power - Power Switch - Speaker - Headphones - Aerial jack on Horizontal PCB.