KD8CEC Amateur Radio

Frequency adjustment of uBITX (Si5351) How to calibration for Frequency fine adjusting This document describes how to precisely adjust the frequency of the Si5351 module Applies to all devices that use the Si5351 module, such as uBITX I used a very old instrument to show the difference in frequency for verification of this post.

uBITX Firmware CEC Version 1.08 Release Version 1.08 is the first major release since 1.061,  I will release it after a 50-day beta test

Introducing uBITX's Invalid Calibration Symptoms and Recovery Mode uBITX CEC Firmware supports recovery mode from version 1.075 Of course, we have been using uBITX Manager to back up uBITX's settings so far. I think this is the best way.

uBITX Firmware CEC Version 1.075 (Beta) Release The beta version 1.07x was officially released as version 1.08 http://www.hamskey.com/2018/05/ubitx-firmware-cec-version-108-release.html

Creating a simple S-Meter Sensor for uBITX There are various ways to attach S.Meter to uBITX. You can find things on the Internet that are far superior to what I have created.

Setting S.Meter to uBITX with CEC Firmware Version 1.074 Beta Version 1.074 will be distributed with uBITX Manager 1.05 within 2 days This document consists of uBITX's S.Meter setting method, examples displayed on the screen, video and so on. At the bottom of this article is example from Ham radio deluxe. CEC firmware is based on pure uBITX without hardware modifications. Other types of LCD, S.Meter, etc., can be attached as an option when you want.

How to Calibration uBITX This document will be incrementally added or changed as needed. I have received many questions about Calibration. Let me write about the experience that people and people around me have done so far. The calibration method of CEC Firmeare is the same as the original firmware. Most of the following are my experiences. I thought uBITX failed after calibration failed. After analyzing the source, I noticed that the calibration was quite difficult to succeed.