Si5351 Vfo, wordpress. By CesarSound. Dual VFO A/B, SPLIT, RIT.

Si5351 Vfo, wordpress. By CesarSound. Dual VFO A/B, SPLIT, RIT. Oct 23, 2025 · Live di Domenica 26 Ottobre 2025 ore 11. Downloads: Hex file for the 16F1825 click for 25MHz version or 27MHz version. com/arduino-si5351-sketch/ 2. com. Using JCR 10kHz-225MHz VFO. Sweeten your tea or coffee with this new design! IMPORTANT: New upgraded software is now available for my SugarCube VFO. See the schematic, PCB, firmware and features of this project by Jan. The mixer is the popular NE602 / SA612 IC. May 30, 2018 · circuit of a vfo using arduino uno and si5351 module. levinecentral. The “how to” of connecting an Arduino bo… In this series of videos I go though how to build a VFO based on the Arduino platform using the SI5351. 0 october 2023:Due to the 25 MHz version not working properly, it has been updated. In fact, that’s exactly what it is. CAT-enabled (Kenwood protocol). Support different TRX architecture: Single and double IF superheterodyne. Up-conversion with general coverage 2-30MHz and high IF. The 27 MHz version has also been adjusted accordingly (not yet available). It's a really teeny tiny VFO. Sep 30, 2021 · This board is a universal radio project controller, with an ATMega328P(U) microcontroller and lots of options. Just how small can you make a dual-output digital VFO/BFO? This version of the ZL2PD si5351 VFO uses an ATtiny85 8-pin controller to cut the si5351 VFO component count down to the minimum. The intention was for it to become a basic building block in transceivers, receivers, … Jan 2, 2021 · VFO/RF generator for use in homebrew radio equipment such as direct conversion and superheterodyne receivers or ham transmitters. Dec 11, 2016 · It is based on atmega328 as a controller. You can controll the VFO using an encoder and also a SmartPhone via a mobile application developed here for this purpose. ino /* Si5351 VFO By LA3PNA 27 March 2015 Modified by NT7S 25 April 2015 Modified to be Si5351 Arduino v2 compliant by NT7S 21 Nov 2016 Added LiquidCrystal_I2C support, M0NIL, December 2020. Si5351 VFO Introduction: A central thread in my recent projects (last 40 years) has been the job of putting a radio “on frequency”. 4K views 00:30 Jan 2, 2021 · VFO/RF generator for use in homebrew radio equipment such as direct conversion and superheterodyne receivers or ham transmitters. The ZL2PD SugarCube Si5351 VFO Just how small can you make a digital PLL VFO based on the Si5351a chip? I set out to demonstrate that it's feasible to design and build it in a volume close to that of a cube of sugar. stander83@gmail. The VFO includes IF offsets, frequency displays and a Dec 31, 2020 · Thanks Bob for the prompt answer, well, i measured the output and it seems to be in the +10/12 dbm on 50 ohm, it’s the same output i have on Andy Summers vfo…so no problem, i suppose that the problem, considered the fact that nobody complains for this issue, is related to my si5351 board. Dec 26, 2020 · A simple VFO for the Si5351 for either LCD, LCDI2C or OLED Raw Si5351_VFO. i’ll try to change it, and i’ll let you know Simple VFO for portable/micro transceiver based on Si5351 with CW-key - andrey-belokon/NanoVFO 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. Presenteremo il suo fantastico si5351 VFO with adaptive step control built by JF3HZB Charlie Jursch and 167 others 168 reactions · 21 comments · 16 shares Scott Barker W. Update v. O. 00 In collegamento da Cremona, un Radioamatore/Autocostruttore: IU2FDU, Luigi. Learn how to build a complete superhet receiver with Si5351 clock generator, VFO and BFO oscillators, RIT/XIT offsets and LCD display. SDR QRP HF Transceiver VFO Generator - 10kHz To 220MHz Variable Frequency Oscillator For Ham Radio DIY (4. **** Please scroll down f It offers modest performance in the way of timing jitter (which leads to spurious birdies & FM), but turns out to be entirely adequate for use as a VFO in HF SSB transceivers. Save current freq and band to EEPROM. Here is an older project of mine – another variant of a VFO. May 11, 2018 · To many, this will be just another Si5351 VFO project, with nothing to distinguish it from the others. ADIF to Map Amateur Ham Radio Contacts by K2DSL (ADIF наносить на карту аматорські контакти радіостанції) - http://www. 6K views 00:30 Domenica 21 Dicembre 2025 ore 11:00 - LIVE - su YouTube Dec 18, 2025 · 1. php A VFO between 4 KHz and 225 MHz based on Si5351 and Arduino Nano - Community Standards · danielromila/VFO-Si5351-LCD16x2-I2C 5 days ago · Ricetrasmettitore CB HexFet di Nuova Elettronica: Vfo esterno Test #radio #faidate #shortwave #diy For use in DIY homebrew radio equipment such superheterodyne single/double conversion receiver, SDR, HAM QRP transceivers or RF generator. Double Conversion Receiver: For anyone interested in making a double conversion receiver with the SI5351 and SI4735 (32), this is the block diagram of the receiver blocks that I built and it works great. . thanks. Nov 9, 2025 · I think this is what I want to build for my first test transmitter. 3. A. Steve G4ALG is using my code in his external VFO to control his lovely vintage Yaesu FR-50 and FL-50B receiver transmitter pair. Allow any combination of two Si5351 and one Si570: Si5351, Si570, Si5351+Si5351, Si570+Si5351, Si570+Si5351+Si5351. 1 day ago · Si5351 PLL VFO Jan 2, 2026 · 11K views 00:12 📻 Buona domenica amici! Questa mattina, ascoltando le Dec 21, 2025 · 2. For use in DIY homebrew radio equipment such superheterodyne single/double conversion receiver, SDR, HAM QRP transceivers or RF generator. This project is an evolution of the older AD9850 based VFO (here and here). This project implements a VFO and BFO using an Arduino with Si5351 signal generator. Most receivers and transmitters (Superhet, DC & some SDR’s) require a VFO. You can email it to me - bertie. For use in DIY homebrew radio equipment such superheterodyne single/double conversion receiver, SDR, HAM QRP transceivers or RF generator. The connections for LCD, Si5351 and AVR are explained in may previous post at " A Simple Si5351 based vfo (signal generator) for ham radio use [quick start-setting up and general details]" The idea is to keep it very basic with some of the essential elements and to use a Rotary encoder for all adjustments. Colin VK2JCC’s first homebrew SSB rig is using my sketch. This version uses the new version of the Si5351 library from NT7S. I am trying to get hold of the sketch for this project. Further details of Steve’s project here. 73 de ZS6BS Bertie Julio Cesar DC and Nitzia Gisela Guerra 2 reactions · 1 comment JuanCarlos Berberena Gonzalez QSO 9y · Public -FYI- Raduino with the S meter bar added. com/ham/grid_square. For control board schematic click here and for the Si5351 board click here . This time with the popular Si5351 clock generator, allowing to create a complete solution for a superhet, including both the VFO and BFO oscillators. Lorenzo I3ZYJ shared pics of his Arduino si5351 VFO as a crystal bank replacement in an older 2m FM transceiver. H. 3y · Public So yes, I forget his name but there’s a guy jumping in close to Hamvention with a radio on transmitting on the way down! COOL!!!!!!!!!! Chris Truman and 7 others 8 reactions 󱎖 Jan 2, 2021 · VFO/RF generator for use in homebrew radio equipment such as direct conversion and superheterodyne receivers or ham transmitters. Traditionally, this has been a free running LC oscillator, with its inherent “problems” - drift, FM, noise, frequency calibration. 4) | 4075 ratings ** ARDUINO-SI5351 VFO sketch - https://vk3hn. I'll change later the crystal and output filter for 20 m. ioy3tc, glxj, li2d, v3ho, 9u4jh, fwu6, 9iecl, mkn4, fhij, a6grs,