KD8CEC Amateur Radio

Release CEC Firmware v1.121 for uBITX V5 I did some experiments with the help of a beta tester with V5. he experiment was mainly to pass the modified filter. You can see videos related to the experiment below.
(The firmware download link is at the bottom of this post)

Use the filter and Attenuator to test the VNA(Track scope) function in Antenna Analyzer
I have measured the performance of the S2 port added to the EU1KY Antenna Analyzer.

Release Firmware CEC Version 0.1 for Antenna Analyzer(EU1KY) I would like to thank EU1KY and DH1AFK OM for making and improving this wonderful antenna analyzer. The Antenna Analyzer is already perfect enough. I just want to add a little bit. This project will continue until CEC Version 1.0.

What's new with uBITX V5 #2 -  LPF and other UBITX Version 5 with improved  filter for spur has recently been released. I always appreciate Ashhar Farhan, who always makes great work.

Information on uBITX Version 5 can be found on the link below. and you can download to sourcecode with schematic
https://github.com/afarhan/ubitx_v5

uBitx v5 Changes
https://groups.io/g/BITX20/wiki/uBitx-v5-Changes.

What's new with uBITX V5 #1
http://www.hamskey.com/2019/02/whats-new-with-ubitx-v5-1-changed-if.html

At the end of this article is a link to download a CEC firmware test version.

4. Antenna Analyzer(EU1KY) - How to Setup and Calibration
The setup and calibration methods are the same for most firmware, Only the menu position is different.
I will use AA Firmware CEC version for convenience.
(AA firmware CEC Version will be released within one week.)

What's new with uBITX V5 #1 - Changed IF frequency UBITX Version 5 with improved  filter for spur has recently been released. I always appreciate Ashhar Farhan, who always makes great work.

Information on uBITX Version 5 can be found on the link below. and you can download to sourcecode with schematic
https://github.com/afarhan/ubitx_v5

uBitx v5 Changes
https://groups.io/g/BITX20/wiki/uBitx-v5-Changes.

Antenna Analyzer(EU1KY) - How to Firmware Update  You can easily find some Firmware for Antenna Analyzer(EU1KY) on the internet. I will also release imporved firmware soon.

if you have AA (EU1KY's antenna analyzer), you cans use all the firmware. i will try to explain it in this article


(AA firmware CEC Version will be released within one week.)

If you have an antenna board, you can make your own antenna analyzer in 30 minutes.
also, you can buy assembled finished products.
If you have purchased a finished product, just follow the modifications below.

1.FAA-450 Antenna Analyzer (EU1KY) Introduction I recently received a RF board. It is in the form of a docking board on the STM32F746 Discovery board.
When you connect the RF board and the STM32F746 Discovery board, they operate as a very good antenna analyzer.

1.Introduction (this article) - http://www.hamskey.com/2019/02/faa-450-antenna-analyzer-eu1ky.html
2.Create FAA-450- http://www.hamskey.com/2019/02/assembling-faa-450-antenna.html
3.How to update the Firmware - http://www.hamskey.com/2019/02/3-antenna-analyzereu1ky-how-to-update.html
4.How to Setup and Calibration - http://www.hamskey.com/2019/02/4-antenna-analyzereu1ky-how-to-setup.html 5.Principle of Antenna Analyzer
6.Antenna Analyzer Firmware Improvement



As well as a general antenna analyzer, it is possible to measure the phase so that the characteristics of the antenna can be easily grasped.

 I accidentally used this antenna analyzer, but it was incredible. So I decided to analyze this antenna analyzer a little bit more and …

A few months too busy I started the project urgently in the second half of 2018, With God's care, the project was well done and successfully demonstrated. Sorry for not responding to emails and messages in the meantime.

uBITX Setting for Extneded LPF's

I find it hard to find the right title for this posting.
Extneded LPF's, Hacked LPF, Improved LPF... and more


Anyway, I noticed a couple of months ago that the various ways to improve the Spur of uBITX were discussed by some OM's on how to replace the LPF.

This version is for users who want to modify the LPF, Users who use Stock Hardware do not necessarily have to upgrade this firmware.

Backup uBITX configuration using QR Code
If you are using the CEC firmware and Nextion LCD, you can back up the configuration file in a simple way. If you have an internet-enabled mobile phone, you can back up various configuration files.

uBITX Firmware CEC Version 1.1 Release
Version 1.1 is the first major release since 1.097, I will release it after a 50-day beta test.


Version 1.1 includes all additions or improvements from 1.08 to 1.09, 1.093, 1.095, 1.097 

How to use uBITX CEC Firmware Source
CEC Firmware is based on unmodified uBITX.
Starting with the 1.7x version, we started to support various LCDs, and 1.9 supports Nextion LCD.
Signal Meter was supported in version 1.8, Starting with Version 1.9, I2C Type Signal Meter Sensor (Standalone Signal Analyzer) is supported.

These compile options are described in 'ubitx.h'.  This post explains how to configure ubitx.h.

uBITX Firmware CEC Version 1.097Beta  Release (Include  Nextion LCD, TJC LCD GUI Firmware V3, uBITX Manager V1.097,
Standalone Signal Analyzer1 V0.7)

Changed Standalone Signal Analyzer1 V0.5 => Standalone Signal Analyzer1 V0.7
uBITX firmware CEC Version is based on uBITX which has not modified anything. Prior to deployment, the 16x02 LCD with built-in is tested first. Nextion LCD, TJC LCD, 20x04 LCD and I2C LCD are not essential for using uBITX Firmware CEC version. In order to view signals with Character LCD or Nextion LCD, Signal Meter Sensor must be installed. Of course, CEC Firmware operates normally even if S-meter sensor is not installed.

Standalone Signal Analyzer (I2C Type Signal-Meter) for uBITX #3 - Advanced and FFT
This is the last section of the Standalone Signal Analyzer. Describes applications on uBITX and Nextion LCD.
1.Create and use with Character LCD 2.For Nextion LCD 3.Nextion LCD Advanced

Standalone Signal Analyzer (I2C Type Signal-Meter) for uBITX #2 - Nextion LCD
Used in the same way as Character LCD, Additional features are provided when used with Nextion LCD

1.Create and use with Character LCD 2.For Nextion LCD 3.Nextion LCD Advanced

Standalone Signal Analyzer (I2C Type Signal-Meter) for uBITX Create and use with Character LCD
This idea was discussed in the uBITX group (https://groups.io/g/BITX20/topics).
I used a separate Arduino to expand the limited I/O. The material needed is Arduino Nano, two resistors and one capacitor, Estimated cost is less than $3.
Now, since it is the initial version, only the received signal is measured, but if it is applied a little, output power and SWR can be measured together.

Setting CW options in uBITX with Nextion LCD (Version 1.097)
This document is intended to explain before you deploy 'CEC Firmware Version 1.097'
CEC Firmware Version 1.097 will be released within one week.

1.CW Options settings in Nextion LCD
Added the ability to set CW Options at GUI by user's request.
Of course, CW options can be set in the same way as Character LCD. We call it Text mode.  However, we added the CW option setting function in Version 1.097 so that it is more convenient in the GUI and can be quickly changed during CW operation.

CW frequency in ubitx
This article is about CW frequencies on uBITX radios. Maybe you already know.
If you already know, please refer to chapter 5 below only, This article is for beginners like me. 

1.The CW frequency display method in uBITX has been discussed for a long time.
Search for 'ubitx cw frequency' or 'bitx cw frequency' in Google.

In particular, mike, the operator of uBITX.net, has clarified the CW Frequency.
https://ubitx.net/2018/07/02/kd8cec-firmware-hint-cw-frequency-display/

How to use memory channel in uBITX with Nextion, TJC LCD
CEC Firmware supports a variety of LCD Types (The 16x02 LCD included with uBITX, 20x04 LCD, I2C type LCDS, and Nextion or TJC LCD)
The memory channel in uBITX started to be supported by CEC Firmware Version 1.0
The basic usage is the same in the latest version

uBITX Firmware CEC Version 1.095Beta  Release (Include  Nextion LCD and TJC LCD GUI Firmware V2)
uBITX firmware CEC Version is based on uBITX which has not modified anything. Prior to deployment, the 16x02 LCD with built-in is tested first. Nextion LCD, TJC LCD, 20x04 LCD and I2C LCD are not essential for using uBITX Firmware CEC version.
In order to view signals from Character LCD or Nextion LCD, Signal Meter Sensor must be installed. Of course, CEC Firmware operates normally even if S-meter sensor is not installed.

Capacitor Selection and Application of S-Meter in uBITX with Nextion LCD
This document is intended to illustrate some of the features added in CEC Firmware Version 1.095, Version 1.095 has been released. (http://www.hamskey.com/2018/07/ubitx-firmware-cec-version-1095beta.html)
Several features have been added in Version 1.095, Most of the improvements will be covered in the deployment article.

How to use Multi Nextion LCD (TJC LCD) with uBITX
This document is intended to illustrate some of the features added in CEC Firmware Version 1.095,  Version 1.095 has been released. (http://www.hamskey.com/2018/07/ubitx-firmware-cec-version-1095beta.html) Several features have been added in Version 1.095, Most of the improvements will be covered in the deployment article.

Nextion, TJC, Character LCD current consumption
When using Nextion LCD, the first question I get is 'What is the current consumption?' I do not know. I did not even know the name of Nextion LCD until recently.
CEC Firmware Users continued to talk about Nextion LCD, so I got to know Nextion LCD. I even confused TJC LCD and Nextion LCD.
Instruments used in this document are not guaranteed to be accurate.

Creating a simple S-Meter Sensor for uBITX (LM358 Version)
If you are already using S-Meter, you do not need to view this document. This document is for those who do not have an S-Meter Sensor or want to use some of the features using S-Meter on the Nextion LCD. 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.

uBITX Firmware CEC version is based on unmodified uBITX. However, to see the strength of the received signal, you have to attach the sensor. Of course, there is no problem in using CEC firmware without a signal meter sensor. Most people I know have not installed an S-meter yet.

uBITX Firmware CEC Version 1.094Beta  Release (Include  Nextion LCD and TJC LCD GUI Firmware)
uBITX firmware CEC Version is based on uBITX which has not modified anything. Prior to deployment, the 16x02 LCD with built-in is tested first. Nextion LCD, TJC LCD, 20x04 LCD and I2C LCD are not essential for using uBITX Firmware CEC version.
This version is not significantly different from version 1.08. Nextion LCD and TJC LCD is added to 1.09x version

uBITX with Nextion LCD (CEC Firmware) - Installation and Introduction uBITX CEC Firmware supports various LCD since Version 1.08 (16x02 Parallel, 20x04 Parallel, 16x02  I2C, 20x04 I2C, 16x02 Dual LCD with I2C).
Supports Nextion LCD (Graphic LCD) from Version 1.09, Version 1.09x is primarily aimed at Nextion LCD support. Also 1.09x will continue to be Beta version. If you want a stable version, please use 1.08 or 1.1 version to be released in the future.

How to use Nextion LCD #3 - Practice for use with a transceiver
I do not know much about Nextion LCD. During the production of uBITX Firmware which is HF Transceiver, I was introduced by several OMs, The ultimate goal of this article is to create a GUI for the HF Transceiver.

uBITX CEC Version officially supports Nextion LCD from version 1.09.
I will support 2.4 "and 2.8" LCD by default. You do not need to understand everything below to connect uBITX Nextion LCD. Just use the Nextion Editor to load the firmware on the Nextion LCD. If you want to create your own GUI, please read these articles.


How to use Nextion LCD Series #1 Start Nextion LCD #2 Programming and application
#3 - Practice for use with a transceiver #4 Applied to HF Transceiver #5 Advanced Application (Applied to various sizes)