This is a VFO (Variable Frequency Oscillator) project that can be used for DIY self-made devices such as superheterodyne receivers, DCR transceivers, SDR transceivers or Ham QRP transceivers. It also has bar graph indicators for signal strength (S-Meter) and 20 Band presets. And can also be used as an RF/clock generator.

Features:
It has 10kHz to 220MHz working ranges.
0.5PPM high precise Tcxo clock, the frequency is more accurate.
Tuning step of 1Hz, 10Hz, 1kHz, 5kHz, 10kHz and 1MHz.
Intermediate frequency (IF) offset (+ or -) is adjustable.
20 band presets (shortcuts) for BCB and HAM frequencies.
Equipped with generator function mode.
RX/TX mode selector for Homebrew QRP transceivers.
The bar graph of the signal meter through the analogs input (ADC).
It can be used as a local oscillator on Homebrew radio receivers (such as superheterodyne, SDR, direct conversion and Homebrew QRP transceivers).
Can be used as a simple RF/clock generator for calibration reference or clock generation.
And also can be used as a common 128x64 I2C OLED SSD1306 display and Si5351 module.
I2C data transmission, only need 2 lines it can be connected to the display, with high stability and accuracy of frequency generation.

Specifications:
Name: SDR Transceivers
Item size: 90 * 100 * 40mm / 3.54 * 3.94 * 1.57in
Item weight: 200g / 7.05ounce
Package size: 175 * 126 * 55mm / 6.89 * 4.96 * 2.17in
Package weight: 256g / 9.03ounce

Packing List:
1 * SDR Transceivers
1 * Type-C Cable