This is a flexible multi-band VFO firmware running on the Arduino platform, driving a Skyworks (formerly SiliconLabs) Si5351 DDS.

Offset IF: VFO = F + IF, VFO = F + IF, VFO = IF – F, OFFSET = 0. • Adjustable mínimum and maximum frequencies. • Easy assembly by clamping the rotary encoder shaft. • All SMD parts are soldered. • Power supply: 7 to 15V DC. Average current consumption: 50mA. • PCB size: 55 x 30 mm. Download manual.

Jul 25, 2019 · A PLL VFO/controller for a multi-band SSB/CW transceiver, targeting Arduino Nano and si5351. The script is SP_VFO_Controller.ino. An initialiser script must be executed once to initialise EEPROM.

Amateur Radio Single Sideband Transceiver Controller for Arduino and SI5351 Clock generator. Includes Dual VFO, single or double band support for 20 and 40 meter bands, CAT control, optional S-me...

Jan 14, 2025 · It's an ingenious design that lets you extract in-phase and quadrature signals so that you can do single side band (SSB) modulation/demodulation. It seemed like a excellent choice for a home-brew transceiver.

Jun 5, 2020 · I have paired may AD9850 with an Arduino Uno, LCD display, Rotary encoder, and a few other small parts and have put together a very descent DDS VFO capable of any frequency between 1mhz and 30mhz (It will go to 40 if you wish).

Jan 11, 2004 · IF, CW, SSB offsets settings when used with Transceiver/ Receiver. Software calibration to WWV or equivalent. Two VFOs and split frequency operation. All settings are held in EEPROM and are permanent (but the user can change it any time). 4 Band selection and 4 Mode selection outputs.

10kHz to 120MHz VFO / RF Generator with Si5351 and Arduino. This is a project of a VFO (variable frequency oscillator) for use in homebrew equipement such as Direct Conversion and Superheterodyne Receivers or Ham Transmitters. Can be used as RF/Clock generator too. Operation range from 10kHz to 120MHz.

The script is simple, supporting a single push-button to cycle frequency increments, and dealing with encoder interrupts, contact debouncing, refreshing the LCD display, IF offset and VFO/BFO outputs.

Feb 2, 2017 · I’ve built a kit Digital VFO with pre-soldered surface mount parts and burned-in firmware, but this was to be a scratch build with Arduino Nano, C code with modifications, and a Silicon Labs si5351 PLL clock generator on a breakout board.